But you have to make sure you have all the information you need before you do.但在签之前你得确保得到了你需要的所有信息
make sure弄明白; 设法确保
I think the door's locked, but I'd better go and make sure (it is).
我想门已经锁了,但我最好还是去查看一下。
Make sure that the sign's the right way up.
一定要把符号的上下弄对。
There were a lot of people in Ali's life we didn't know about.艾莉生活中有太多我们不知道的人
know about知道; 了解; 听说过有关 ... 的情况
I'd love to know about the plan.
我想知道这个计划。
He's such an ostrich he doesn't want to know about his wife's love affairs.
他真是自己骗自己--对妻子有外遇不闻不问。