Unit 4:Hi-technology 4-4-3 mp3
英語時尚口語情景對話4:高新科技4-4-3
The devil knows many things because he is old.
人老見識廣。
Dialoug 3
3
A:Well,Mike, nowadays there's much talk about nanometer.But what on earth is it?
A: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.
B:納米是個長度單位。一納米等于十億分之一米,大概比一個原子小10倍吧。
A:Hmm...it's hard to figure out the exact size,l'm afraid.
A: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.
B: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.
A:這樣說我就明白了。謝謝啊。