If you give up exercise, your muscles shrink and fat increases. By the same token, if you expend more energy you will lose fat.
如果你放弃锻炼，肌肉就会萎缩，脂肪会增多。同样地，如果你消耗较多的体能，你就会减掉脂肪。
Growth, reproduction, and daily metabolism all require an organism to expend energy.
生长、繁殖和日常的新陈代谢都需要有机体来消耗能量。
Extreme athletes expend lots of energy breaking down and repairing and building muscles.
极限运动员消耗大量能量来分解、修复和塑造肌肉。
Since 1914, scientists have known that birds flying in formation—a V-shape—expend less energy.
自1914年以来，科学家们已经知道，以V字形队形飞行的鸟类消耗的能量更少。
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。
Why does their behavior indicate more of a concern with how much energy they expend than with being exposed to predators?
为什么它们的行为表明它们更关心的是消耗多少能量而不是担心暴露在捕食者面前呢？
They do not want to expend energy in what, to them, is a lost cause.
他们不想把精力投到他们认为注定不会成功的事中去。
Children expend a lot of energy and may need more high-energy food than adults.
孩子们耗能多，可能比成人需要更多高能量的食物。
But many do not expend the extra effort.
但许多人不会去付出这种额外的努力。
Don't expend all your energy on such a useless job.
不要把你的精力全花在这无益的工作上。
Analyze risks to decide where to expend test effort.
分析风险，决定测试的重点。
You don't need to expend that much time in watching TV.
你没必要花那么多时间在看电视上。
Neither entity wanted to expend the time or money to develop their own standard.
没有经济实体想要花时间或金钱来开发它们自己的标准。
Why expend time and energy in activities that fail to increase reproductive success?
为什么花时间和精力去做不能提高繁殖率的事情？
That occurs when they take in more energy than they expend. The unused energy is stored as fat.
这种情况发生在他们吸收的能量多余消耗的能量时，未消耗的能量就以脂肪的形式被储存下来。
The basic formula for weight loss is simple and widely known: consume fewer calories than you expend.
减肥最基本的准则非常简单，而且广为人知：少摄取卡路里，多消耗卡路里。
Why would individuals expend time and energy in activities that fail to increase reproductive success?
个体为什么要耗费时间和精力，去从事无法提高种群繁殖率的事情？
The long tail becomes even more obvious when you expend the scope to show the top 1, 000 websites
当你把观察的范围拓展至全球排名前1000的网站时，长长的“尾巴”甚至更明显了
It's about how you choose to expend your precious energy and with whom you choose to share that experience.
这关乎你如何消耗自己珍贵的能量以及你选择了什么样的人来分享这种美好的时光。
Cars must carry their energy and expend energy to carry it so the less weight per unit of energy the better.
汽车必须携带能量而这本身就需要消耗能量，因此单位能量的重量越低越好。
Cars must carry their energy and expend energy to carry it, so the less weight per unit of energy, the better.
汽车必须携带能量而这本身就需要消耗能量，因此单位能量的重量越低越好。
Defensive pessimists expect the worst and expend lots of energy mentally rehearsing how things might go wrong.
防御性悲观主义者会把事情往最坏的地方想，并且他们会花费很多精力想象事情会怎样变得糟糕起来。
Likewise, teams often expend inordinate amounts of time maintaining and fussing over their script-driven build systems.
同样，团队经常花费过多的时间来维护并过分小心地对待他们的脚本驱动的构建系统。
It has been said that most people expend more effort researching their next vacation than they do planning their future.
众所周知，大部分人花费更多精力努力去考虑他们下一次的度假，而不是规划他们的未来。
Put slightly differently, hexagonal cells allow bees to focus on producing honey and expend the least amount of energy making wax.
或者稍微换种说法，六边形的空间使蜜蜂能够把精力放到产蜜上，并且花费最少能量制蜡。
Put slightly differently, hexagonal cells allow bees to focus on producing honey and expend the least amount of energy making wax.
或者稍微换种说法，六边形的空间使蜜蜂能够把精力放到产蜜上，并且花费最少能量制蜡。
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