参军

He was scarcely sixteen when he joined the army.

他参军时刚刚十六岁。

Five months have elapsed since he joined the army.

"自从他参军后,已经五个月了。"

"According to the law, a young man should enlist when he is 18."

法律规定青年人年满十八岁必须参军。

He wished to join the army,but was rejected as medically unfit.

他要参军,但因体检不合格而未被批准。