工人们正费力地用吊车将钢琴吊进大楼。

The workers were hoisting the piano into the building with great effort.

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The workers were hoisting the piano into the building with great effort.

hoisting 是动词 hoist 的现在分词形式。hoist 的意思是"升起、吊起",通常指用机械装置(如起重机、滑轮等)将重物垂直提升或移动的动作。

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