Now I would like to show you a few slides, and I might as well cover this up so that we get it very dark in this room.

给你们看几张幻灯片，我顺便遮掉这个,这样教室就变暗了。

youdao

Now I would like to show you a few slides, and I might as well cover this up so that we get it very dark in this room.

给你们看几张幻灯片，我顺便遮掉这个,这样教室就变暗了。

youdao