We couldn't understand them because they were talking in Chinese.

　　我們聽(tīng)不懂他們在講些什么，因為他們說(shuō)的是漢語(yǔ)。

　　His school work is suffering because of family problems.

　　由于家庭問(wèn)題，他的學(xué)業(yè)日漸退步。

　　Two players are out of the team because of injury.

　　兩名隊員因傷退出了比賽。

　　We have had to raise our prices because of rising costs.

　　因為成本日益上漲，我們不得不提高價(jià)格。

　　His school work is suffering because of family problems.

　　由于家庭問(wèn)題，他的學(xué)業(yè)日漸退步。