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他们就是以极大的耐心做完了他们的实验。
It was with great care that they finished their experiment.
youdao
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当铃响的时候，他们已经将实验做完了。
They had already done their experiments when the bell rang.
youdao
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当铃响的时候，他们已经将实验做完了。
They had already done their experiments when the bell rang.
youdao