1. Even these hard parts may crumble to dust.
    甚至这些坚硬的部分也会破碎成粉末。

2. Errors and uncertainties multiply, cascading upward through a chain of turbulent features, from dust devils and squalls up to continent-size eddies that only satellites can see.
    错误和不可靠性上升，接踵而来的是一系列湍流的徵状，从小尘暴和暴风发展到只有卫星上可以看到的席卷整块大陆的旋涡。

3. Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles in our solar system.
    即使是一台放置在围绕地球的轨道上的望远镜--如非常成功的哈勃望远镜--也因为太阳系中的尘埃微粒而无法胜任。

4. The old furniture was covered in dust.
    旧家具上有尘土.

5. The more expensive kind of antique shop where rare objects are beautifully displayed in glass cases to keep them free from dust is usually a forbidding place.
    高档一点的古玩店为了防尘，把文物漂亮地陈列在玻璃柜子里，那里往往令人望而却步。

6. The Earth was formed about five billion years ago from a rotating, circular cloud of dust and gases such as hydrogen and nitrogen.
    地球的形成约在50亿年前，起源于一团循环旋转的尘埃和诸如氢、氧之类的气体。

7. Dust the dressing table.
    掸掉梳妆台上的灰尘。

8. All air in Billion City would be passed through a cleaning system to remove dust particles, pollen, noxious gases and other pollutants.
    十亿人口城市中所有的空气都通过净化系统来消除灰尘、花粉、有害气体及其它污染物。

9. Soapy picked himself up and beat the dust from his clothes.
    苏比从地上爬起来，拍了拍身上的土。

10. Pollution from smoke and dust vitiates the air .
    烟尘的污染使空气污浊。