那24小时期间是这位时空穿梭者一生的时间。

That 24-hour period constitutes the entire life span of this time traveler.

youdao

神秘的穿梭者和其他自由物体能从稀薄的空气中出现，然后又很快消失，象他们的出现那样迅速。

Mysterious strangers and other random objects can then appear out of thin air and disappear just as quickly.

youdao

但因为你是看守人，所以就注意到他只是在那里停留了一天，整整24小时过去后，这位穿梭者又冷静地穿过了前门。

But as you keep watch, you notice that he simply loiters around for one day, and when precisely 24 hours have passed, the traveler walks calmly through the front of the gate.

youdao