请教2001-08听力第6题

请教2001-08听力第6题

M: That’s really a nice coat.

W: Thanks. I like it too. If only it had a heavy line in it before I can wear it in winter too.

(A) The coat isn't warm enough to wear in cold weather

(B) She bought the coat last winter

(C) She needs to have the coat cleaned before next winter

(D) The coat is the only warm coat she owns

"a heavy line in it"是什么意思？