The boy puzzled his way through geometry.
那男孩煞费苦心地钻研几何
。
The boy puzzled his way through geometry.
那男孩煞费苦心地钻研几何。
The capitalist tried to hammer out an agreement with workers on overtime pay.
煞费苦心设法和工人达
了一项加班工的
议。
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源自
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