In all countries, injuries caused by falls from Windows or down stairs are an important issue, particularly among very young children, and are often due to poor housing conditions.
在所有国家中，从窗户或楼梯上跌落而造成的伤害是一个很大的问题，这一问题在幼儿当中尤其突出，往往也是因住房条件差所导致的结果。
"We apply [an] electric pulse to either end of the cable for about one second," Petrenko says, "and all ice attached to it falls down."
“我们在每根线缆的两端每秒加一个电脉冲”Petrenko说，“所有的冰就都脱落了。”
But, melanin's absorbance falls down so rapidly that by the infrared end of the spectrum its hardly absorbing anything at all.
但是，黑色素的吸光度下降迅速，到光谱红端它几乎什么都不能吸收了。
At the birch wood she sat down to her spinning, singing all the while, for with a song on the lips work falls from the hands more easily.
她在白桦林里坐下来纺纱唱歌，因为嘴里唱着歌，手里的活变得轻松多了。
It's a little like the metal framework of a large building, once the plaster and paint are on we forget it's there at all. But take that framework away, and the whole building falls down.
这有点儿像大型建筑里的金属框架，由于在表面涂了灰膏、刷了油漆人们就忘记了它的存在，可是一旦把它抽走整座大厦就会坍塌。
I'm sorry that that's all you see. Don't you see that each time he falls down; he stands up again instead of crying?
我很遗憾你看到的只是这些，难道你没有看到每次他被打倒后，他站起来而不是哭？
I'm sorry that that's all you see. Don't you see that each time he falls down; he stands up again instead of crying? That's the kind of courage you wanted him to have.
对不起，这就是你所看到的全部，难道你没看到每次他掉下来他都重新站起来而不是哭泣，这就是你想他拥有的勇气。
But debris falls from space all the time, and big objects the size of UARS come down about once a year.
但是一直会有碎片从太空落下，并且每年将会有一个大小同uars接近的大物体落下。
But debris falls from space all the time, and big objects the size of UARS come down about once a year.
但是一直会有碎片从太空落下，并且每年将会有一个大小同uars接近的大物体落下。
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