break (something) off
phrasal verb with break verb uk/breɪk/ us/breɪk/ broke | broken
(SEPARATE)
折断；（使）断开；分开
to separate a part from a larger piece, or to become separate
He broke off a piece of chocolate. 他掰了一块巧克力。
(RELATIONSHIP)
B2 绝交;终止（某种关系）
to end a relationship
They've broken off their engagement. 他们终止了婚约。
The governments have broken off diplomatic relations. 这些政府断绝了外交关系。
(STOP SPEAKING)
B2 突然停顿;突然中断
to suddenly stop speaking or doing something
She broke off in the middle of a sentence. 她话说了一半突然打住了。