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

　　這個地區(qū)有不少于100個的不同物種。

　　New roads will link the principal cities of the area.

　　新建道路將連通這個地區(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)展迅速的領域。

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

　　這家公司實質上已經(jīng)壟斷了這種貿易。

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

　　這個公式用于計算圓的面積。