Difference in time zone, jet lag, lack of morning coffee - are frequently cited reasons as to why you're especially grouchy.
时区的不同、时差、或者没有早茶，这些都是经常会引起你特别不高兴的原因。
It requires inducing a sort of jet lag without leaving your time zone.
这种训练需要制造一种时差感，不过，你不需要为此穿越时区。
Jet Lag is not a psychological concequence of having to readjust to a different time zone.
飞行时差反应不是必须重新调整到不同的时区的心理作用。
It requires inducing a sort of jet lag without leaving your time zone.
这种训练需要人为制造时差感，但不必为此穿越时区。
It requires inducing a sort of jet lag without leaving your time zone.
这种训练需要人为制造时差感，但不必为此穿越时区。
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