常见例句adjective(SWITCH)The basic model uses a simple on-off switch. 基础模型用一个简单的开关。(RELATIONSHIP)an on-off romance 断断续续的浪漫史I need to add that this was not our first break-up; our relationship was on-off for about a year. 我需要加上一句，这不是我们第一次分手，我们这样断断续续有一年了。 返回 on-off