4. In brief/short, ...,简言之,…….
1) In brief, we cannot please everyone all the time. 简而言之,我们无法总是让每个人都满意.
2) In short, science frees us from the bondage of nature. It has made our lives easier and more comfortable.总之,科学把我们从自然的束缚中解脱出来,使我们生活得更加轻松舒适.
[bondage n.束缚;奴役]