Most molecules live for no more than weeks at a time.

大多数分子不会存在超过一周的时间。

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At it's most benign, there's no more than an apathy and weariness that makes it difficult to go about life's daily business; and at its worst, a feeling of meaningless, of futility, of pain.

最温和的时候，冷漠和倦怠的感觉让你很难去继续日常事务，最糟糕的时候，有一种毫无意义，徒劳无用且痛苦悲伤的感觉。

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And they can stay in the air for more than a week, whereas most drones fly for no more than 30 hours at a time.

气球飞艇能在空中停留一个多星期，而多数无人机一次最多只能飞行30小时。

youdao

In practice, the power of incumbents is such that no more than ten, at most, of the 34 races will be close (see map).

ECONOMIST: Party politics

You might recall that Mr Cameron and Mrs Merkel actually signed a letter together two years ago arguing that payments to the EU should "increase, at most, by no more than inflation".

BBC: German chancellor Angela Merkel

Though the Front is still unlikely to gain more than a handful of seats at most, no fewer than 134 of its candidates have got through to second rounds by virtue of winning the first-round votes of at least 12.5% of registered voters in their constituencies.

ECONOMIST: Those mutinous French