By timing how long the signal takes to make the return trip, the instruments can determine differences in height.
通过计算信号往返需要的时间，仪器可测定差距高度。
The settlers would be sent supplies from Earth, but would go on the understanding that it would be too costly to make the return trip.
移居者将得到发自地球的给养，但是他们先要理解，返程之旅过于昂贵。
Professor van de Ven said: 'These findings on the return trip effect can help us make new predictions on how people experience the duration of tasks, even those unrelated to travelling.'
教授vandeVen说：“我们所发现的‘归途效应’帮助我们更好的了解在处理任何事情中期望值对结果产生的心理影响，这种影响并不局限在旅途过程中。”
I called back to the White House from the Middle East trip and said I thought that, on my return, I should stay at work and make news rather than go back to the campaign trail.
在中东之行的旅程中，我打电话回白宫说，我认为回国以后，我应继续工作，制造新闻，而不是回到竞选宣传之路上。
I called back to the White House from the Middle East trip and said I thought that, on my return, I should stay at work and make news rather than go back to the campaign trail.
在中东之行的旅程中，我打电话回白宫说，我认为回国以后，我应继续工作，制造新闻，而不是回到竞选宣传之路上。
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