请问turn on这个短语的中文意思是什么?

turn on
打开
This tap is stiff; it won't turn on.
这个龙头太紧,拧不开.
Please turn the light on for me; it's getting dark.
天要黑了,请把灯给我打开.
You should light the gas as soon as it is turned on.
一扭开煤气管,你就应该点燃煤气.
(使)感兴趣; (使)兴奋
Some of the students really turned on to these different courses.
一些学生真的很喜欢这些名目繁多的课程.
Many young people are taking drugs to turn on.
许多年轻人吸毒寻求刺激.
What kind of music turns you on?
你特别爱听什么音乐?
I'm not turned on by modern pop music.
我对现代流行音乐不感兴趣.