常見例句adjective(SWITCH)The basic model uses a simple on-off switch. 基礎(chǔ)模型用一個簡單的開關(guān)。(RELATIONSHIP)an on-off romance 斷斷續(xù)續(xù)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，這不是我們第一次分手，我們這樣斷斷續(xù)續(xù)有一年了。 返回 on-off