turn on的意思是打开; 接通…的供应。
例句：PHRASAL VERB 打开（设备）；接通（…的供应）。When you turn on a piece of equipment or a supply of something, you cause heat, sound, or water to be produced by adjusting the controls.I want to turn on the television...我想开电视。
PHRASAL VERB 诱惑；激发…的性欲。If someone or something turns you on, they attract you and make you feel sexually excited.The body that turns men on doesn't have to be perfect.并不是非得完美无瑕的身体才能激发男人的性欲。
PHRASAL VERB 突然表现得;突然装出：If you say that someone turns on a particular way of behaving, you mean that they suddenly start behaving in that way, and you are often also suggesting that this is insincere.He could also turn on the style when the occasion demanded.如果场合需要，他也能瞬间就表现得风度翩翩。
PHRASAL VERB 对…进行身体（或语言)攻击;斥责：If someone turns on you, they attack you or speak angrily to you.Demonstrators turned on police, overturning vehicles and setting fire to them...示威者攻击警察，推翻车辆并将其纵火焚烧。
PHRASAL VERB 依靠;取决于：If something turns on a particular thing, its success or truth depends on that thing.The plot turns on whether Ilsa will choose her lover or her husband.故事情节取决于伊尔莎会选择情人还是丈夫。