1to change train (plane, bus etc)
2transfer between modes of transport
Examples
nǐ你děi得zài在shè涉gǔ谷huàn chéng换乘huǒ chē火车。
你得在涉谷换乘火车。
You have to change trains at Shibuya.
我需要换乘吗?
Do I need to transfer?
友情提示：请留意您需要换乘线路的首末班时间，以免耽误您的出行。
Friendly Reminder: Please keep in mind the closing time of the line you need to switch to, so as to avoid delays in your trip.