come in handy造句

1、That key will come in handy if you lock yourself out.要是你把自己锁在了屋外，那把钥匙就派上用场了。

2、Don't throw that away ─ it might come in handy.别把它扔了——它或许有用。

3、We may find it useful in future. It may come in handy someday.这东西日后可能用得着。