他背弃了家族生意,转而投身音乐。
He ___turned ___his ___back ___on the family business and pursued music instead.
当他们最需要帮助时,最老的朋友却抛弃了他们,这让他们感到被背叛了。
They felt betrayed when their oldest friend ___turned ___his ___back ___on them in their time of need.
这位候选人在选举后背弃了他的竞选承诺。
The candidate ___turned ___his ___back ___on his campaign promises after the election.