long duration

基本解释

The weather becomes protean due to the pollution's influence of long duration.
因为污染的长期持久的影响，天气变化无常。
It seems clear that human body is equipped to overlook the need for sleep in order to meet emergencies of quite long duration without doing any harm to it.
为了应付长时间的紧急事件，人似乎可以忽视睡眠的需要，而且这样做对身体也无害，毋庸置疑人体是有条件做到这一点的。
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Researchers hope that the hydrogen products of that reaction might go beyond launching rockets, and also feed hydrogen fuel cells for long duration space missions.
研究者希望化学反应后产生的氢，不仅能发射火箭，也能为长时间的空间任务补充氢电池。

"I am particularly concerned by the long duration of unemployment faced by a great number of workers, and the disruptive impact that this long-term unemployment has had, and will have on these workers and their families.

House economists noted the sticky rate of long duration unemployment and the high share of part-timers.
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Still, we are concerned for people with excessively large bond allocations—especially ones including long duration Treasuries or leveraged mutual funds.
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