The book is an analysis of poverty and its causes.

　　這本書分析了貧困及其原因。

　　This computer is popular for its good design and ease of use.

　　這種計算機(jī)因設(shè)計巧妙、簡單易用而廣受歡迎。

　　Its brain is small in relation to its body.

　　和它的身體相比，它的大腦很小。

　　The government now has to explain its decision to the public.

　　政府現(xiàn)在必須向公眾解釋決策的理由。

　　The country has to import most of its raw materials.

　　這個國家大多數(shù)原料均依賴進(jìn)口。