turn on

turn on 打开，依靠，取决于

【例句】

◆ If you need some help slowing down，turn on relaxing music．如果你需要一些帮助来慢下来，就打开令人放松的音乐。（课标高考） 

◆ Very soon, bright lights were turned on and the big movie-camera was wheeled into position．很快，明亮的灯被打开了，大的电影摄影机也被推到了应处的位置。（课标高考）