His left hand moved feebly at his side.

他的左手在身边无力地动了一下。

《柯林斯英汉双解大词典》

The bird feebly beat its wings.

这鸟无力地拍动着翅膀。

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The engine sputter feebly for a while and then stop.

发动机发出一阵微弱的嗒嗒声后停了下来。

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The engine sputter feebly for a while and then stop.

发动机发出一阵微弱的嗒嗒声后停了下来。

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