The results suggest the reason why males of other species die faster than females may be the stress and strain of competition, the authors said.

研究还揭示出，在其他物种中雄性比雌性早死的原因可能是竞争的压力过大。

youdao

Fluoropolymer processing AIDS can also be added in small amounts to reduce stress at the die exit.

也可以添加少量的氟聚合物加工助剂来减轻口模出口的应力。

youdao

Die buildup is related to stress at the die exit.

口模积料与口模的出口应力有关。

youdao

These include the stress of injury or of seeing an expedition partner become injured or even die.

VOA: special.2010.02.24

But more staff, including a psychologist, who will treat people affected by post-traumatic stress disorder after seeing loved ones die, and a water and sanitation health expert, will fly out over the next few days.

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"The exact cause of death has not yet been established, but it's quite clear that Knut didn't die in a situation of stress, " Mr Blaszkiewitz said.

BBC: Candles by Knut's enclosure

"Sadly many will retire before that because they are either injured, they die or they suffer from the stress of the job, " he said.

BBC: Police officers (unidentified)