the underground是什么意思

the underground是什么意思 the underground是什么意思 the underground是什么意思 the trip on the underground costs 4 in shanghai是什么意思 south underground station是什么意思 South underground station是什么意思 subterrane&underground是什么意思? underground banksman是什么意思 underground cities是什么意思 collects underground是什么意思?全句是：In parts of Australia this water which seeps through the sandy soil collects underground to form underground lakes.有谁能解释一下这个句子么? underground和washing machine是什么意思 请问各位underground是什么意思噢?常常听到underground这个词. take the underground是什麽意思 ? I rode the underground home. take an underground 和 take the underground哪个对 by underground /take an underground/take the underground to someplace 哪个对可多选 We’are going to take the underground Where is the n_____ underground station?where