One thing that does ground old aircraft is the impending failure of their aluminium structure from metal fatigue.

让老旧飞机搁浅的一件事就是飞机铝构造因为金属疲劳产生的故障隐患。

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Heart failure causes breathlessness and fatigue that severely limits normal daily activities such as walking.

心脏衰竭引起呼吸困难和疲劳，严重影响行走等正常的日常活动。

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The goal was to come up with a nanometal that was strong enough, hard enough and "supple" enough to resist fatigue failure and wear in advanced applications.

我们的目标是提供足够强度和硬度，又兼具足够抵御疲破坏的纳米材质，以使其能够与高级应用相借合。

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Our research also indicated that 2000-2003 seems to be a time when failure fatigue had set in.

FORBES: What Can We Learn from a Culture of Failure?

This relieves the symptoms of extreme breathlessness and fatigue associated with severe heart failure.

BBC: Image of heart failure

Testimony at the hearings also revealed that fatigue apparently contributed to the failure of Renslow and First Officer Rebecca Shaw to save the plane as it approached Buffalo Niagara International Airport.

CNN: FAA orders review of regional airlines' training