“来回的”用英语怎么说？

老程睡去, 祥子来回的翻腾,始终睡不着.Old Cheng fell asleep, but Xiangzi tossed and turned in wakefulness.下面传来了听熟了的歌声和鞋子在地上来回的咔嚓声.From below came the familiar sound of singing and the scrape of boots on the flagstones.不过,系统在这个死区内可能会发生来回的振...