1Obtain from (a number) another that contains the first number a specified number of times.

我要你将14乘以19。

我们都知道怎样乘以10。

1. 1.1 Increase or cause to increase greatly in number or quantity.
   （使）大量增加
   no object ever since I became a landlord my troubles have multiplied tenfold

   自从我成为房东以后，我的麻烦增加了十倍。

   with object cigarette smoking combines with other factors to multiply the risks of atherosclerosis

   吸烟和其他因素结合在一起使患动脉粥样硬化症的危险倍增。

   Example sentencesExamples

   • If a second engine is lost, the airplane will still fly, but the problem of increased fuel burn is multiplied.
   • An index dominated by frothy sunrise industries multiplies the risk of investing for us all.
   • For patients who do not speak or understand the native tongue, the problems are multiplied tenfold.
   • It also greatly multiplies prospects for broad adoption, which is one of the most meaningful, quantifiable measures of success.
   • Few institutions were closed, however, as a program of increasing classification of prisoners multiplied the accommodation required.
   • Now multiply their problems tenfold and one gets the idea of what a national health care system would be like in the United States with a population of 300 million people.
   • Psychological distress, for example, multiplies the risk of stroke by 1.5 times.
   • I am one of those increasingly multiplying long-haired adolescent boys!
   • When combined with high blood pressure and high blood cholesterol, smoking multiplies the risk of having a heart attack.
   • There is no question that the dead trees greatly multiplied the speed and intensity of the San Bernardino fires.
   • As this bravest and most honest of golfers made his way up the last fairway on the final day, he was greeted by applause that, had it been multiplied ten-fold, might have qualified as lukewarm.
   • Wrought iron greatly multiplied the possibilities of tension: much wider roof spans than those offered by timber alone were now possible.
   • We will need to multiply treatment tenfold - to the same level that we see in countries like Sweden.
   • It's important because it multiplies the risks of a stroke or heart attack up to four times.
   • With optical component prices being cut in half every nine months, it is becoming increasingly affordable to light hundreds of fibers in each bundle, which greatly multiplies available bandwidth.
   • He said that slower rate of growth and rapid increase of population has multiplied the woes of Northeast and halted its economic development.
   • Their troubles were multiplied by the fact they had been given no more information than the passengers.
   • Chronic dioxin exposure is believed to multiply the risk of several cancers, increase the chance of immune system disorders, and to cause liver damage.
   • For every point that the underlying asset increases, profit is multiplied by the customer's stake, and vice versa.
   • The chance of preventing a coronary event is the absolute risk multiplied by the relative risk reduction, but the question is whether the relative risk reduction is equal in patients of all ages.

   Synonyms

   increase, increase exponentially, grow, become more numerous, accumulate, proliferate, mount up, mushroom, snowball, burgeon, spread, expand
2. 1.2no object (of an animal or other organism) increase in number by reproducing.
   （动物或其他有机体）繁殖，增殖
   Example sentencesExamples

   • If they choose the latter course, their stock of sheep will multiply (because of natural reproduction).
   • As the cats multiplied, the rats and mice were eradicated and this led to a problem of cat over-population.
   • Coccolithophores are single-celled organisms which multiply rapidly near the surface, shedding tiny calcium-rich scales.
   • The goats multiply by themselves - the project runs along the lines that when your goat has a kid, you give it to your neighbour.
   • Major people epidemics occur when a human flu virus recombines with an animal virus, an animal flu virus multiplies in man, or the existing chemicals rearrange more virulently.
   • In fact, if the individual continues to take the drug, the resistant virus will only multiply faster.
   • All of these produce toxins as the bacteria multiply in the intestines after the food has been eaten.
   • Once the spores gain entry to the airways and lungs, the bacteria multiply rapidly, producing anthrax toxin in lethal quantities.
   • The bacteria then multiply rapidly and produce toxins, which result in the rapid progress of the disease.
   • And with litters of ten or more per healthy sow, the animals could multiply rapidly.
   • During the same period fallow deer numbers multiplied from a dozen or so to over 250.
   • Bacteria and some viruses multiply and mutate rapidly, and can evolve much more quickly than we can develop new drugs to fight them.
   • Still the insects multiplied, and spread out all over the park.
   • With a single worm capable of laying 900 eggs a year, his worms began multiplying exponentially.
   • When cooked rice is left in less than ideal conditions for four or five hours or overnight, spores are released and the bacteria multiply dangerously.
   • As the amount of farmed fish multiplies, the wild salmon stock has gone into freefall.
   • Species may multiply but they will tend to do so at the expense of other species.
   • Within a few months a handful of mice and rats had multiplied into 60 mice and 12 rats and started to overrun their owner's house at Westhoughton.
   • Because fleas multiply rapidly, treating fleas involves removing them form the animal's environment as well as its skin and hair.
   • In one year, two rats can produce as many as one thousand offspring and in eight months a group of twenty mice can multiply to two thousand.

   Synonyms

   breed, reproduce, procreate, propagate
3. 1.3 Propagate (plants).
   繁殖（植物）
   Example sentencesExamples

   • The crop is normally multiplied by the use of tubers (seed potatoes) but the use of the true potato seed is becoming important.
   • Instead, people could cultivate the plants for sale from seed or cuttings, thus multiplying the supply and protecting the species in wild places from human predators.
   • Thirty preselected plants were multiplied in tissue culture and duplicates transferred to the greenhouse.
   • The harvested seeds from the selected plant were multiplied for subsequent yield trials conducted for three seasons and then distributed as a new cultivar.
   • Clones of the original plant were multiplied through apomixis.
   • This is a good way to multiply your plants, free of charge.
   • Somatic embryos matured in this way showed a 39% conversion rate to plantlets, which were then multiplied by micro-propagation.

often as submodifier In several different ways or respects.

多处受伤的病人。