词汇:
mobile 移动的 electromagnetic 电磁的
transmitter tower发射塔 shield 隔离屏
circulate 流传 density 密度
disregard 不顾 accelerate 加速,加快
注释:
1.动词prove用的是过去式形式proved,这是一种虚拟语气表示假设的用法。
2.Nobody’s going to drop dead overnight ...没有人会在一个晚上倒地死去……”overnight是副词,意为"一夜间;一下子;整夜”。如:This stadium was not built overnight.这个体育场不是一下子建起来的。
On his way to Europe,John stayed with his parents in Chicago overnight.在去欧洲的途中,约翰在芝加哥他父母那儿待了一个晚上。
3.介词by表示"以……(的速度增加)”。
4.介词by表示"到……前”。如:
By Thursday morning you should complete writing the experiment report.到周四上午你应该写完实验报告。
the year 2000:公元2000年
5.many in high density residential areas是独立主格结构。注意它省略了being,即many(being)in high density residential areas0此夕卜,many指的是many transmitter towers。
6.vat a rate more than three times that of adults可以理解为at a rate(that is)more than three times that of adults,意为"以比成人多两倍的比率”短语中的that指代rate。倍数的表达法是:"数字+times+名词/that”。如:
His salary is three times that of mine.他的薪水比我多两倍。
The sales Volume of refrigerators in 2000 was twice that in 1999.2000年冰箱的销量比1999年多一倍。