It takes a while for my body clock to get adjusted when I fly from New York to London.从纽约飞到伦敦后，我花了一段时间才把生物钟调整过来。The circadian rhythms of the passenger's body clock are in disequilibrium.那乘客生物钟的生理节奏失去平衡。Jet lag is caused because the body clock does not readjust immediately to the time change.时差综合征因人体生物钟没有对时间变化及时作出调整而产生。