1. Diana took the new job for the sake of making more money.
黛安娜为了挣到更多的钱而接受了这项新的工作。
2. Light accepts darkness for his spouse for the sake of creation.
为了创造的缘故，光明便接纳黑暗做他的佳偶。
3. But, I never imagined she would sacrifice her lovely hair for the sake of my son!
可是，我真是想不到她竟然为了我儿子牺牲掉了自己美丽的头发!
解释
1.PHRASE 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 somethings sake. 为了 的目的
例：Lets assume for the sake of argument that we manage to build a satisfactory database.
让我们为了讨论假定我们设法构建了一个令人满意的数据库。
例：For the sake of historical accuracy, please permit us to state the true facts.
为了历史的准确性，请允许我们说出事实真相。
2.PHRASE 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 arts sake or sport for sports sake. 由于自身原因
例：Economic change for its own sake did not appeal to him.
经济变化本身并没有吸引他。
3.PHRASE When you do something for someones sake, you do it in order to help them or make them happy. 为帮助某人; 为使某人开心
例：I trust you to do a good job for Stans sake.
我相信你会为了斯坦把工作做好。
4.PHRASE Some people use expressions such as for Gods sake, for heavens sake, for goodness sake, or for Petes sake in order to express annoyance or impatience, or to add force to a question or request. The expressions for Gods sake and for Christs sake could cause offence. 看在上帝的份上
例：For goodness sake, why didnt you call me?
天哪，你为什么没给我打电话?
常见用法
用作名词
He is away all year for the sake of his work.
因工作关系，他整年出门在外。
You should take care of your niece for the sake of your sister.
看在姐妹的份上，你应该照顾你的侄女。
Never do wrong for the sake of money.
绝不要为金钱而做坏事。
Its the companys policy to sacrifice short-term profits for the sake of long-term growth.
为长期发展而牺牲短期利润是公司的方针。