To take off 这个短语用来形容某事一炮打响，获得成功。

　　例句

　　Streaming movies has really taken off. I don’t know anyone who still buys DVDs.

　　The app he developed really took off and made him a millionaire.

　　请注意

　　另一个短语 take on something 的意思是一个人对某事的理解和看法。

　　例句

　　What’s your take on this announcement from the university? I’m not sure I quite get it.

　　I’m going to ask John for his take on what the boss said. I’m not sure whether it’s good news or bad!