But the idea that the early Earth got its water from ice-laden comets ploughinginto its surface is still popular.
但是早期地球的水是由载满了冰的彗星带入的观点依旧很流行。
2
For most of human history, cattle, sheep and goats grazed on land that wasn't suitable for ploughing, and in doing so they converted inedible grass into edible meat and milk.
在人类的大部分历史时期，人们在不适合耕种的土地上放牧牛羊，这样它们就把不能食用的草转变成了肉和奶。
3
With the dollar falling to a record low of $1.51 against the euro, investors were ploughing their funds into oil and other commodities to hedge against inflation.