There was much discussion about the reasons for the failure.
就失败的`原因进行了大量的讨论。
She moves with the natural grace of a ballerina.
她的动作具有芭蕾舞演员自然优雅的丰姿。
There are still a few residual problems with the computer program.
电脑程序还有一些残留问题。
It was a difficult situation, when you think about it.
仔细想来，当时处境是很困难的。
The population is increasing at about 6% per year.
人口以每年约6%的速度增加。