Break off means to separate: break off a piece of chocolate.

Break off的意思是分开：掰开一块巧克力。

Ron sniggered, breaking off when Hermione caught his eye.

罗恩窃笑起来，直到赫敏用眼神阻止。

I distinctly remember you breaking things off with me.

我很清楚的记得你和我已经划清界线。

He broke off for the second time.

第三次突然停下来。

And tonight he broke off their engagement.

今晚解们的婚约。

But she broke off abruptly and looked over her shoulder.

她猛地停住头，扭头朝身后望去。

Cancer cells tend to break off from the initial tumor and spread.

癌细会从最初的肿瘤中脱落并扩散。

So, I just broke it off with her.

所以我和她分手。

He broke off, looking out of the window.

顿住，眼睛望着窗外。

But I-I broke it off with him.

但我已经跟分手。

I-I broke it off with the doctor.

所以我跟医生分手。

To break it off with her.

相信这家伙吗。

The lion breaks off his chase.

这只雄狮放弃追逐。

" I just wondered where you-" Ron broke off, shrugging.

“我只是担心，不知道你——”罗恩打住头，耸耸肩膀。

" ...they were breaking off and then using as hammers. " ......

们折断石笋之后当锤子用。

Almost nothing could make them break off.

没有什么能让它们放弃攻击。

The police broke off the fight outside of the nightclub.

警察中止俱乐部外的打斗。

35 years after Washington and Tehran broke off diplomatic ties.

这是继华盛顿和德黑兰断绝外交关系长达35年后。

Cecily, I am very hurt to hear you broke it off.

塞西莉，听到你解我们的婚约我十分心痛。

And want them to break off any relationship they may have.

希望们断绝可能产生的任何关系。