be that as it may 尽管如此；即便如此；尽管那样

【例句】
I know that he has tried hard; be that as it may, his work is just not good enough.
我知道他已经尽力了，尽管如此，他的工作仍不太理想。

I know you don't like him but be that as it may, you can at least be polite to him.
我知道你不喜欢他，不过即使如此，你至少能对他有礼貌。