他们花了大约半个小时的时间才解出这道数学难题。（work out）
It took them about half an hour to work out the difficult math problem.
It took them about half an hour to work out the difficult math problem.

【答案】It took them about half an hour to work out the difficult math problem.

【解答】

【点评】

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发布：2024/6/27 10:35:59组卷：0引用：1难度：0.7

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他们花了大约半个小时的时间才解出这道数学难题。（work out）It took them about half an hour to work out the difficult math problem.It took them about half an hour to work out the difficult math problem.