Definition
To reach a specific age or time.
到达某个年龄或时候
He's turning fifty this year.
他今年要五十岁了。
The meeting will start when it turns three o'clock in the afternoon.
会议将在下午三点开始。
She will receive a special gift when she turns twenty-one.
她将在二十一岁时收到一份特别的礼物。