介绍:
走遍美国（4） Episode 1 Act 2 公共交通 public transportation
问路：How to get to…? I am lost.
地铁：Subway; metro; tube
动词: take; transfer
· Take number 1 subway and then transfer to the Airport Express.
交通状况：the traffic is very heavy; rush hour; traffic jam; traffic congestion; the traffic is smooth
· I got stuck in the traffic.
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