above all
adv. 最重要, 首先

above all things
尤其是, 最重要的是, 首要的是

add all numbers together
把所有的数字加到一

after all
毕竟

against all odds
不计成败

A proper part-time job does not occupy students'too much time. In fact,it is unhealthy for them to spend all of time on their study.As an old saying goes:All work and no play makes Jack a dull boy.
一份适当的业余工作并不会占用学生太多的时间，事实上，把全部的时间都用到学习上并不健康，正如那句老话：只工作，不玩耍，聪明的孩子会变傻。

Admittedly,ensuring sustainable development will require a certain level of sacrifice and arduous efforts on the part of all people . Nonetheless,the accrued returns will both strengthen the nation and ensure a better life for all Chinese citizens .
诚然，确保持续的发展需要人们做出一定程度的牺牲和辛勤努力。但是，积累的成果不仅能使国家更强大，而且能保证中国公民过上更美好的生活。

All his children take turns in looking after him
他的孩子们轮流照顾他。

All I can do is to play it by ear.
我只能骑驴看帐本走着瞧了。

All I have to do is learn English.
我所要做的就是学英语。