Because they were so sensitive to deadly gases such as methane and carbon monoxide, a canary dropping off its perch was a highly visible signal to the miners that it was time to leave.

因为它们对于甲烷和一氧化碳等致命毒气非常敏感，从栖木上掉下来的金丝雀是一个明显的信号，告诉矿工是时候离开了。

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A precious and rational plan for the Record down once, will never fade away in a long time we leave, it will still have strong vitality, and the more adhere to the display of its own.

一个珍贵而理性的图式一朝被实录下来，将永不消逝；在我们离去很久，它仍将具有旺盛的生命力，并愈发坚持地展示它自己。

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It may request the Supplier to store the aforementioned products on its premises and leave them at its disposal for a determined period of time.

它可能请求供应者在它的前提上储存上述的产品而且在它的处理离开他们一段坚决时间。

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While more companies are allowing employees to work when and where they want to, they increasingly are limiting people's ability to take a leave or work part-time, the Families and Work Institute found in its 2012 National Study of Employers.

CNN: Smartphones let work win out