1.knock backTo ‘knock back’ is to drink something quickly.一饮而尽。Example: ‘After our chat he was so thirsty he knocked back three cups of water.’ 2.idle awayTo ‘idle away’ means to waste time doing nothing.无所事事，游手好闲。Eg: ‘I idled away the whole day yesterday, so today I need to do some work.’ 3.point the fingerIf you ‘point the finger’ at someone then you accuse them of being responsible for something bad that has happened.指控怀疑某人。Eg: ‘Don’t point the finger at me, I didn’t break that glass.’ 4.ask aroundTo ‘ask around’ means to go around and ask many people the same question.向周围打听，询问。Eg: ‘I will ask around the neighborhood and see if anyone has seen my dog.’5.cross the lineIf you ‘cross the line’ then you overstep a boundary or a limit and do something that is considered wrong or unacceptable.也就是过分了，越过底线了。Eg: ‘He&`&s taken my credit card again, this time he has crossed the line.’ 文中提及小说：《牧羊少年奇幻之旅》（The Alchemist）结尾音乐：My Everything - owl city