A：Well, Mike, nowadays there's much talk about nanometer. But what on earth is it?
    麥克，現(xiàn)在好多人都在談?wù)摷{米。它到底是個啥呀?
    B：Nanometer is a length scale. It's one billionth of a meter, roughly ten times the size of an individual atom.
    納米是個長度單位。一納米等于十億分之一米，大概比一個原子大10倍吧。
    A：Hmm...it's hard to figure out the exact size, I'm afraid.
    嗯…恐怕還不太容易想像得出它的具體大小呢。
    B：Well, let's make it this way. For comparison , 10 NM is 1000 times smaller than the diameter of a human hair. There are as many nanometers in an inch as there are inches in 400 miles.
    這樣說吧。10納米比一根頭發(fā)直徑的1/1000還短。一英寸所含的納米數(shù)量等于400米所含的英寸數(shù)。
    A：I see.Thank you.
    這樣說我就明白了。謝謝啊。