在多出来的时间，GRAIL太空飞船就有充足时间排空气体保证他们的科学测量不受影响。
The extra time in space also gives the GRAIL spacecraft time to vent gases that could impact their science measurements.
在多出来的时间，GRAIL太空飞船就有充足时间排空气体保证他们的科学测量不受影响。
The extra time in space also gives the GRAIL spacecraft time to vent gases that could impact their science measurements.
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