Tests at the age of seven provide a benchmark against which the child's progress at school can be measured.

七岁时进行的测试为孩子在学校中的学习发展提供了一个测量基准。

《牛津词典》

I started at the age of seven.

我从七岁开始。

youdao

At the age of seven, Winston Churchill was sent to a boarding school named St. George.

七岁时，温斯顿·丘吉尔被送到一所名叫圣乔治的寄宿学校。

youdao

Edward Kennedy died on August twenty-fifth, two thousand nine, at the age of seventy-seven.

VOA: special.2009.09.13

It wasn't until 1645 at the age of thirty-six or thirty-seven that Milton would publish his first volume of poems, which he titled simply Poems.

直到1645年他36或37时,弥尔顿才出版了第一部诗集，就叫《弥尔顿十四行诗集》

耶鲁公开课 - 弥尔顿课程节选

So,at the age of forty-seven she started to glue crushed colored glass in special designs on every surface in her house.

VOA: special.2010.04.14

Daley, who lives in Plymouth with his mother and two brothers, started diving at the age of seven.

WSJ: Menu

Metin Arditi was born in Ankara, Turkey, in 1945 and moved to Switzerland at the age of seven.

UNESCO: Metin Arditi to be named UNESCO Goodwill Ambassador

At the age of seven, Hamlisch became the youngest person to be accepted at New York's prestigious Juilliard school.

BBC: Streisand and Minnelli pay tribute to Marvin Hamlisch