"不断辱骂和嘲弄" can be translated into English as "constantly berating and ridiculing" or "continually hurling insults and mockery".
Here are two example sentences for context:
1、 He was constantly berating and ridiculing his colleagues in front of everyone, which created a very tense work environment.
（他不断在众人面前辱骂和嘲弄同事，导致工作环境非常紧张。）
2、 Instead of resolving conflicts through dialogue, she continually hurled insults and mockery at her opponents, making the situation worse.
（她没有通过对话来解决冲突，反而不断对对手进行辱骂和嘲弄，使情况变得更糟。）