with與about的用法區別

　　There was much discussion about the reasons for the failure.

　　就失敗的原因進行了大量的討論。

　　She moves with the natural grace of a ballerina.

　　她的動作具有芭蕾舞演員自然優雅的豐姿。

　　There are still a few residual problems with the computer program.

　　電腦程序還有一些殘留問題。

　　It was a difficult situation, when you think about it.

　　仔細想來，當時處境是很困難的。

　　The population is increasing at about 6% per year.

　　人口以每年約6%的速度增加。