for the sake of sb / sth
为了某人(或某事)起见;因某人(或某事)的缘故
in order to help sb / sth or because you like sb / sth
They stayed together for the sake of the children.为了孩子,他们还待在一起。
for sth's sake
为某事本身的缘故;鉴于某事本身的价值
because of the interest or value sth has, not because of the advantages it may bring
I believe in education for its own sake.我相信教育本身就是有价值的。
释义来自《牛津高阶英汉双解词典》第 9 版