In Britain they change the clocks twice a year.
在英国人们每天调两次时钟。
Safety officials also suggests as you change your clocks change the batteries in your smoke detectors.
安全官员建议在调表的同时，也要更换烟雾探测器的电池。
US scientists want to change the current system, which keeps clocks in synch with solar time by adding a leap second every 18 months or so.
美国科学家希望改变现行系统，亦即透过每隔约18个月添增1闰秒，让时钟与太阳时保持一致。
The rule of thumb to get your body clocks back in sync is about one day per time zone change, making it "very difficult for real road warriors to get acclimated, " Dr. Auger said.
奥格说，根据人们的经验，一般来说，每往回跨越一个时区，需要一天时间来让身体与环境同步，所以这让“经常进行商务旅行的人很难适应”。
A. the pure social change of time cannot fool humans' biological clocks.
单就社会层面调动时间还是无法骗过人类的生理时钟。
A. the pure social change of time cannot fool humans' biological clocks.
单就社会层面调动时间还是无法骗过人类的生理时钟。
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