He leant on the back of a chair, and covered his face.

他靠在一张椅背上，捂着脸。

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Place the fingertips on a wall or the back of a chair for support.

双手放在墙上或椅背上支撑。

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"They loved it," he said, carefully folding it over the back of a chair and smoothing it flat.

“他们非常喜欢。”他一边说，一边在椅子背儿上把衣服仔细地叠起来，并甩手把它展平。

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On the back of it, an iron bed and a chair and table were tied, and on top of them a crate of Barred Rock chickens."

车尾绑著一张铁床、椅子和桌子，上面还有一箱芦花鸡，“

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He saw a rag hanging on the back of a chair and used it to wipe his hands.

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Or if Doc Brown had strapped a flux capacitor to the back of a comfy chair in Back to the Future (1985) instead of that iconic DeLorean?

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There was a small popping sound and later, a crack appeared in the back of the chair.

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