The social obligations of scientists vary from age to age.

科学家的社会责任在不同时代有不同的内容。

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The periodic movements of the universe are the same, up and down from age to age.

宇宙的周期运动是同样的，从一个时代到另一个时代往返不已。

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Ancient writing poetry has a long history, it is China be handed down from age to age!

古老文字源远流长，唐诗宋词代代相传，那是中国！

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From an early age, Aleck liked to make new things and find new ways of doing work.

VOA: special.2010.05.14

There's sort of a period around the age of four, four and a half, where kids make the transition from failure to success.

儿童在大约四岁四岁半时,会发生从失败向成功的转变

耶鲁公开课 - 心理学导论课程节选

His father, who was a local pastor from the southwest of England, sent him to Oxford, although he went at the age of 14.

他的父亲来自英格兰西南部,是一个当地牧师，把他送进了牛津，尽管他进大学时只有14岁。

耶鲁公开课 - 政治哲学导论课程节选

Men should take 1, 000 mg of elemental calcium from age 19 to age 70 and increase to 1, 200 mg at age 71.

CNN: Do vitamins help against type 2 diabetes?

For example, one idea from the Simpson-Bowles Commission is to raise the age seniors can collect their full Social Security benefits from 67 to 70 and the eligibility age from 62 to 65.

CNN: Keep seniors' national park fees low

We're moving from the PC age to the Internet age, and Microsoft is simply not a force on the Internet.

CNN: Microsoft is guilty as charged. So what?