What is the idiom to describe a really long line of people (waiting in line to buy tickets, for example)? I know one of the words is 龙. I tried googling it, but couldn't find it.
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Please add some context. 'Long line' is ambiguous. – imrek Oct 03 '15 at 09:25
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Is there an English idiom? – user6065 Oct 03 '15 at 09:48