Unlike with most flights, changing your shuttle flight is free of charge.

与其它航线不同，穿梭航班的机票改签是不收费的。

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This was the 129th U. S. space shuttle flight, and the 31st to the space station.

这是美国第129次航天飞机飞行，也是第31次飞往空间站。

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This effect would be absent if the sley dwelt during the period of shuttle flight.

如果梭子飞行期间筘座停顿，这种效果便不复存在了。

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This effect would be absent if the sley dwelt during the period of shuttle flight.

如果梭子飞行期间筘座停顿，这种效果便不复存在了。

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