提示：点击例句中的单词，就可以看到词义解释

What the hell are you wearing a life preserver for ?

你穿着救生衣搞什么鬼？

What is this ? . That ` s a life preserver .

这是什么?那是救生圈.

As it moves through new york 's crowded harbour , the molinari carries an electronic life preserver , the collision avoidance system .

当它通过纽约拥挤的港口，莫伦纳承载着电子救生用品、避碰系统。