光子没有质量——它们是没有重量的。
首先，把两个相同重量的物体放进两个盒子里。然后盖上盒子。
First, put two objects with the same weight into two boxes. Then cover the boxes.
伽利略从比萨斜塔上扔下不同重量的物体，并计算它们的下落时间。他要实现的不仅是他的勃勃雄心。
Galileo was not merely ambitious when he dropped objects of varying weights from the Leaning Tower at Pisa and timed their fall to the ground.
这能反映始于大约15，000年前向定居生活的转变时，伴随而来的人类骨架重量的下降。
These could reflect the declining weight of the human skeleton that seems to have accompanied the switch to settled life, which started some 15,000 years ago.
随着熔岩流动和扩散从而形成盾状火山，这座火山的最终高度取决于这座新火山支撑自身重量的能力。
As lava flows and spreads to form a shield volcano, the volcano's eventual height depends on the new mountain's ability to support its own weight.
有44%的垃圾是由发达国家产生的；且仅在美国，平均每个人每月都要扔掉相当于他们体重重量的垃圾。
The developed countries are responsible for 44% of waste, and in the US alone, the average person throws away their body weight in rubbish every month.
例如，如果你计划得当，你就会知道你只需要350克的牛肉和6薄片培根，而不是超市冷冻柜里预先包装好的任何重量的食材。
If you plan properly, you'll know that you only need, say, 350g of beef and six rashers of bacon, not whatever weight is prepacked in the supermarket chiller.
他们造了一台能吊起150吨重量的吊车。
屋顶将承受不住它的重量的拉力。
这也就是重量的定义。
可以买到很多种价钱和重量的紧急防毒面具。
Smoke escape emergency respirator masks are available in a wide variety of prices and weights.
销售商应该有铁锁负重量的信息。
The responsible dealer will have information on carabiner strength.
最后发现，盔甲比同等重量的背包负重更大。
Wearing the armor turned out to be a much greater burden than carrying the same weight in a backpack.
当你进食后，你的身体也会加上那部分重量的。
人体有600多块肌肉，占身体重量的40%。
那种义务是否就是情感类型、没有道德重量的？
所有的秘密都是有重量的。
水星巨大的铁核占了其自身重量的60%多。
Mercury's huge iron core takes up more than 60% of the planet's mass.
它们怎么做到这么快就达到如此庞大的重量的？
我不讨厌任何事物 - 讨厌是一个有重量的词。
第二个也更有重量的巨锚就是对加入欧盟的向往。
The second and even weightier anchor has been the lure of EU membership.
端脑是大脑最大的部分，约为该器官重量的85%。
The cerebrum is the largest part of the brain, accounting for 85 percent of the organ's weight.
研究人员想知道对重量的感觉是否会更广泛的影响人们的判断。
The researchers wanted to know whether the sensation of weightiness might influence people's judgments more broadly.
在性能提升之外，iPad2的厚度和重量的减小也不容小觑。
Besides the performance improvements, iPad 2's reduction in thickness and weight should not be underestimated.
我给各位演示，下落途中，的确是没有重量的，这有个壶。
And I'm going to tell you how I can convince you that as I jump, that I will, indeed, be weightless Here is the bottle.
但对四脚站立的动物来说，真正在这些运动中支撑身体重量的是脚垫。
But for four-legged critters, it's the footpads that ultimately support the animal's weight.
另外，7月更高的温度导致了小麦的减产和麦穗重量的减轻。
In addition, higher temperatures in July linked up to less wheat to harvest and lighter grains.
魔芋有很多益处，它比普通纤维更具黏性，吸水量达到自身重量的17倍。
Konjac fiber has multiple benefits. Konjac is much more viscous than usual fibers, retaining up to 17 times its weight in water.
APS在不增加重量的情况下，可以为未来车辆提供更好的保护。
APS is supposed to provide the future vehicles with a higher level of protection without added weight.
APS在不增加重量的情况下，可以为未来车辆提供更好的保护。
APS is supposed to provide the future vehicles with a higher level of protection without added weight.
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