2. This, of course, is a weighty
proviso, one many theorists would not concede without a fight.

这当然是有条件的,没有理论家会没有战斗就后退。
3. And in English legal texts there are also some fixed words or phrases used to lead
proviso clauses.

在英文法律文本中,也有一些固定的词或短语引导但书条款。