用法及例句：

确信；证实

Make sure you lock the door when you go out.

出门的时候一定要确保门锁好了。

Make sure the wires don't touch.

一定不要让金属线搭在一起。

Make sure the edges are glued down.

一定要把边缘粘牢。

Make sure you rinse all the soap out.

一定要把皂液冲洗干净。

Make sure that you are not underinsured.

确保你的保险是足额的。

Make sure that you defrost it completely.

确保将其彻底除霜。