单词off-again--on-again
It was unclear what convinced China to finally approve the deal after years of off-again, on-again talks.
究竟是什么促使中国在这么轮屡败屡试的会谈之后最终同意了这笔交易。
Jane doesn"t know if she"s going to the picnic. She"s off again, on again about it.
简不知道自己是不是要去参加野餐，她一会儿这样，一会儿那样。