I can only afford to watch television for an hour gonight because I have homework to do.
因为我要做家庭作业,所以今晚我只能花一小时看电视。
Most of us fail in our efforts at self-improvement because our schemes are too ambitious and we never have time to carry them out.
我们大多数人想自我完善却遭到失败,这是因为我们的规划过于宏大,而又根本没有时间去实施。