- the length of time that a person has lived or a thing has existed年龄：
he died from a heart attack at the age of 51
他51岁时死于心脏病
his wife is the same age as Una
他的妻子和尤娜同年
he must be nearly 40 years of age
他肯定近40岁了
young people between the ages of 11 and 18.
11到18岁的年轻人。
- a particular stage in someone's life人生的特定阶段：
children of primary school age.
学龄儿童。
- mass noun the latter part of life or existence; old age晚年, 老年：
with age this gland can become sluggish.
随着年龄增大, 这种腺可能变得迟缓起来。
- a distinct period of history年代, 时代：
an age of technological growth
技术发展的年代
a child of the television age.
电视时代的孩子。
- Geology a division of time that is a subdivision of an epoch, corresponding to a stage in chronostratigraphy【地质】代。
- archaic a lifetime taken as a measure of time; a generation〈古〉一生; 一（时）代：
Nestor is said to have lived three ages when he was ninety years old.
传说涅斯托耳到90岁时经历了三个时代。
ages/an age
informal a very long time〈非正式〉很长时间：I haven't seen her for ages.
我很长时间没见她了。
- grow old or older, especially visibly and obviously so（尤指显而易见地）年龄增长, 变老：
you haven't aged a lot
你没怎么变老
the tiredness we feel as we age.
随着年龄增长我们感到的疲劳。
- with obj. cause to grow, feel, or appear older使长大, 使显老, 变老：
he even tried ageing the painting with a spoonful of coffee.
他甚至试着用一勺咖啡来让画看起来古旧。
- (especially with reference to an alcoholic drink) mature or allow to mature（尤指酒精饮料）变得陈香; 使醇香：
no obj. the wine ages in open vats or casks.葡萄酒在敞口的大木桶中变得陈香。
- with obj. determine how old (something) is决定（某物）的年龄：
we didn't have a clue how to age these animals.
我们无从知晓这些动物的年龄。
act （或be）one's age
- usa. in imperative behave in a manner appropriate to someone of one's age and not to someone much younger行为与年龄相称。
come of age
- (of a person) reach adult status (in UK law at 18, formerly 21)（人）成年（英国法律现规定18岁成年, 原为21岁）。
- (of a movement or activity) become fully established（运动, 活动）完全确定, 成熟：
space travel will then finally come of age.
太空旅行终将实现。
of an age
- old enough to be able or expected to do something到了…的年龄：
the sons are of an age to marry.
儿子们到了结婚的年龄。
- (of two or more people or things) of a similar age（两者, 多人, 多物）年龄近似的：
the children all seemed of an age.
孩子们看起来差不多大。
through the ages
- throughout history自古至今, 历史上。