for the sake of something
If you do something for the sake of something, you do it for that purpose or in order to achieve that result. You can also say that you do it for something's sake.
Let's assume for the sake of argument that we manage to build a satisfactory database.
为了便于讨论,假定我们成功构建了一个令人满意的数据库。
For the sake of historical accuracy, please permit us to state the true facts.
为了忠于历史,请允许我们说出事实真相。
for its own sake , for their own sake
If you do something for its own sake, you do it because you want to, or because you enjoy it, and not for any other reason. You can also talk about, for example, art for art's sake or sport for sport's sake.
Economic change for its own sake did not appeal to him.
经济变化本身并没有吸引他。
for someone's sake
When you do something for someone's sake, you do it in order to help them or make them happy.
I trust you to do a good job for Stan's sake.
我相信你会为了斯坦把工作做好。
for God's sake , for heaven's sake , for goodness' sake , for Pete's sake
Some people use expressions such as for God's sake, for heaven's sake, for goodness' sake, or for Pete's sake in order to express annoyance or impatience, or to add force to a question or request. The expressions 'for God's sake' and 'for Christ's sake' could cause offence.
For goodness' sake, why didn't you call me?
天哪,你为什么没给我打电话?