“发现号”将于星期日脱离空间站踏上两天的归途。

Discovery undocks from the space station Sunday for the two-day journey home.

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“发现号”将于星期日脱离空间站踏上两天的归途。自从“发现号”1984年首次升空后，这是它的第39次，也是最后一次使命。

Discovery undocks from the space station Sunday for the two-day journey home. First launched in 1984, this is Discovery's 39th and final mission.

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