The boy puzzled his way through geometry.
那男孩煞费苦心地钻研几何学。
The boy puzzled his way through geometry.
那男孩煞费苦心地钻研几何学。
The capitalist tried to hammer out an agreement with workers on overtime pay.
资方煞费苦心设法和工人达成了
班工资的
议。
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