Where do I catch the A train?
我在哪里搭A车呢？
You just wait right over on the other platform.
你就在那边另一个月台上等。
Go back upstairs, and cross over. Just follow the signs for the A train.
往回走楼梯，再穿过去，就跟着A车的指示牌子走。
From which platform does the train start?
火车从哪个月台开出？