如题所述
Let's watch a video first.
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第1个回答 2008-09-11
Let's begin with a video.
第2个回答 2008-09-11
Let's have a look at a piece of VCR first.
第3个回答 2008-09-11
Let us look at section of video frequencies first
第4个回答 2008-09-11
let's take a vedio first
