In human infants this occurs around the age of one.

人类婴儿大约在1岁左右达到这个标准。

youdao

I started playing tennis very early, around the age of three.

很小的时候我就开始打网球，大概三岁左右吧。

youdao

Back around the age of 19, I had started sending my short stories out for publication.

回想大概19岁左右，我开始把我的短篇小说寄到出版物。

youdao

On average,those who were larger around the middle were more likely to have migraines than those of the same age with smaller waistlines.

VOA: special.2009.03.18

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

Typically--I don't know for those particular children, but typically on those tasks three-year-olds and young four-year-olds tend to fail, and around the age of four or five kids tend to succeed.

我不太了解那些特定儿童的情况,但一般来讲,三岁和刚进入四岁的儿童,通常会在这些任务中失败,而四岁或是五岁左右的儿童则通常会成功

耶鲁公开课 - 心理学导论课程节选

We see a sharp drop off around the age of 35 when people become more established.

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Scientific studies show that around the age of 40, men also become less fertile.

BBC: Older fathers: what's behind the trend?

Investing: Godfrey says that you can introduce the concept of investing around the age of 10.

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