When the U. S. space shuttle has accomplished its mission, it can be ready for another trip in about two weeks.

美国航天飞机完成使命后，它可以在大约两周之内准备好下一次航行。

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When the U. S. space shuttle has accomplished its mission, it can be ready for another trip in about two weeks.

美国航天飞机完成使命后，它可以在大约两周之内准备好下一次航行。

youdao