你不知道有多少包装里是没有说明书的吗？

You don't know how many packs are without manuals?

youdao

镜头闪回，在Michael的公寓里，有几本保安系统的说明书散布在办公桌上。

Michael flashes back to his apartment where several instruction manuals to security systems are spread across the desk.

youdao

在招募志愿者之前，有必要做好研究工作，让工作说明书尽可能具体。

If necessary, do some research so that youcan be as specific as possible.

youdao