| 单词 | to-ing |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔to-ing and fro-ing〕Inevitably, when both parents have custody of the child, there's a lot of to-ing and fro-ing between them for the child concerned.当父母双方都对孩子有监护权时，孩子不可避免地要在父母之间不断地来回奔波。剑桥高阶〔to-ing and fro-ing〕The legal to-ings and fro-ings could delay the start of the trial.繁琐的法律程序可能会使开审的时间推迟。剑桥高阶Inevitably, when both parents have custody of the child, there's a lot of to-ing and fro-ing (= moving from one place to another) between them.当父母双方都对孩子有监护权时，孩子无可避免地要在父母之间不断地来回奔波。剑桥国际The legal to-ings and fro-ings (= to-ing and fro-ing) could delay the start of the trial for up to six months.法律上的反复会耽搁这项审判的开始达六个月之久。剑桥国际 |
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