There are no fewer than 100 different species in the area.

　　這個(gè)地區(qū)有不少于100個(gè)的不同物種。

　　New roads will link the principal cities of the area.

　　新建道路將連通這個(gè)地區(qū)的主要城市。

　　The big growth area of recent years has been in health clubs.

　　健身俱樂部是近年來發(fā)展迅速的領(lǐng)域。

　　The company has a virtual monopoly in this area of trade.

　　這家公司實(shí)質(zhì)上已經(jīng)壟斷了這種貿(mào)易。

　　This formula is used to calculate the area of a circle.

　　這個(gè)公式用于計(jì)算圓的面積。