for Christ's〔God's, goodness', pity's〕 sake 看在上帝分上(used when asking strongly for sth)
For goodness' sake, don't tell him!行行好,请别告诉他!
for the sake of, because of
参见because条。
句型例句
He loves poetry for beauty's sake.他因为诗美而喜欢诗歌。
We did it for convenience' sake.我们为了方便起见才这么做。
She changed into old clothes for the sake of comfort.为了舒适,她換上了旧衣服。
