This is because of all the energy they expend to make the equipment to catch animals—the enzymes, the pumps, and so on.

这是因为他们为制造捕获动物的设备而花费的所有能量——酶、泵等。

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History has taught us: never underestimate the amount of money, time, and effort someone will expend to thwart a security system.

历史教育我们：有些人为了破解一个安全系统是不惜代价的。

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But the fat content of the body may be of equal importance, because it determines your buoyancy and the amount of energy you must expend to simply stay on the surface of the water.

但是身体的脂肪含量也同样重要，因为它决定了你的浮力和让你停留在水面上必须花费的能量。

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"The blunt reality is that there will be dwindling appetite and patience in the US Congress -- and in the American body politic writ large -- to expend increasingly precious funds on behalf of nations that are apparently unwilling to devote the necessary resources or make the necessary changes to be serious and capable partners in their own defense."

VOA: special.2011.06.11

It doesn't have to expend as much energy, therefore, the majority in this case is right.

能量输出较少，因此，这一次，多数派是正确的。

麻省理工公开课 - 热力学与动力学课程节选

The reversible process is going to be colder because it has to expend more energy.

可逆过程降温更多,因为输出的能量更多。

麻省理工公开课 - 热力学与动力学课程节选

The most telling evidence of the cost of delaying reform is the sheer effort companies have to expend to cope with the country's labyrinthine bureaucracy.

ECONOMIST: The trouble with free trade

All courts rely on the police powers of governments to enforce the law, and police regularly make calculations about how much effort they can expend to catch specific suspects.

ECONOMIST: A criminal court for the world

The SEO benefit of this again is that there is no need to expend more resources to optimize a separate mobile website.

FORBES: How to Dial Up Mobile SEO