Here's why: the ambient bacteria floating around in the air can land on your food, "and can go from one to one million in a matter of hours," Draeger says.

原因：空气中悬浮的室温生细菌会落在你的食物上，“并且一个细菌能在几小时内增殖为百万个，”Draeger说。

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Global currency regimes tend to come and go in long cycles, with fixed-rate and floating-rate regimes following each other with a surprising degree of regularity.

全球汇率体制的周期往往很长，固定汇率制度和浮动汇率制度以令人惊讶的规律性互相交替。

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Go to the top of the hill, a flower from the foot of the white clouds floating up, suspended in the village, also suspended in the green mountains and rivers.

走到山顶，一朵一朵的白云从山脚浮了上来，悬浮在村庄之上，也悬浮在青山绿水之上。

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Already, the New York Times has agreed to publish an article on a giant floating garbage patch in the Pacific, if the journalist can raise the money to go.

ECONOMIST: Is charity the newspaper industry's last, best hope?

But what does it mean when you go from Bill and Dave in shirtsleeves sitting beside you on a bench in the company cafeteria to a ghostlike Carly floating on a television screen?

FORBES: Great Garages