On a cold day there can be quite a draught from the letterbox.
天冷的时候能明显感觉到从信箱那边吹来的过堂风。
柯林斯例句
Peep through the letterbox and see if anyone is at home.
透过信箱看家中是否有人.
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I personally saw him put the letter into the letterbox.
我亲眼看见他把信投送到信箱里.
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Putting pieces of folded brown paper in the letterbox for her.
还曾替她往信箱里放些折叠起来的棕色纸片.
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