as the salt of the earth怎么翻译？

as the salt of the earth.
社会中坚

A:what are you talking about?do you know.you've rubbed salt in his wounds.
你说什么啊.你知道吗.你在他伤心上撒了一把盐.
B:what i say is true.he is capable of doing the job.
我说的是真的.他没有这个工作的能力．
A:why?
为什么？
B：i know there are many people want to as salt of the earth.but not everyone has ability.
我知道有许多人都想成为社会中坚．但不是每一个都有能力．
C:he may say what he likes.i don't care it.i'll try to do everything．
他要说什么随他说．我不在乎．我会努力去做每件事．
B:i hope you will succeed in your efforts.
我希望你的努力会得到成功．

作为高尚的人，作为社会的中坚分子

就象盐的地球