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In cheongsam, she seems to be there by crossing time and space.

她身着旗袍，仿佛穿越了时空来到这里。

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Quality square wave power supply, current zero crossing time is short, arc stability, arc without high frequency stability.

优质方波电源，电流过零时间短，电弧稳定，无需高频稳弧。

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Of course, as any regular traveller knows, the severity of jet lag when crossing three time zones is trivial compared with crossing, say, ten.

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Jim Waterhouse, a professor of biological rhythms at Liverpool John Moores University in Liverpool, England, says he often recommends that people crossing three time zones or less and only staying three days or less might want to consider maintaining the same sleeping and waking schedule from home rather than trying to shift the body clock.

WSJ: To Avoid Jet Lag This Summer, Travel Like a Scientist

As a labor leader, however, I would have a hard time crossing any picket line, even a virtual one.

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