noun 下载 🔗分享 来回，反复，往返。 The movement (of someone or something) forward followed by a return to the same position. May refer to a concept such as an emotional state or a relationship as well as a physical thing. Examples : "The constant to and fros of the students between classes filled the hallways with noise. " 学生们在教室之间不停地来来回回，让走廊里充满了喧闹声。 action way place direction 与AI对话词汇游戏阅读练习
