sixteen 四级六级

She began dating boys when she was sixteen.

16岁时就开始同男孩子约会。

He was scarcely sixteen when he joined the army.

军时刚刚六岁。

When he was sixteen he joined a religious sect.

16岁的时候加入一宗教教派。

She was sixteen and sweetly innocent.

当时16 岁，天真烂漫，招人喜爱。

It's an imposition to ask the workers to work sixteen hours a day.

"要求工人每天工作六小时,真是太过份。"

Compulsory schooling ends at sixteen.

义务教育至16 岁为止。