1、It is commonly accepted that no college or university can educate its students by the time they graduate. 人们普遍认为高校是不可能在毕业的时候教会他们的学生所有知识的。
2、year) witnessed/saw a sharp rise in. . . . . . 年. . 急剧上升
3、Environmental experts point out that increasing pollution not only causes serious problems such as global warming but also could threaten to end human life on our planet. 环境学家指出：持续增加的污染不仅会导致像全球变暖这样严重的问题，而且还将威胁到人类在这个星球的生存。
4、Happiness takes no account of time. 欢娱不惜时光逝。
5、Everything has its time and that time must be watched. 万物皆有时，时来不可失。
