1. 地铁 - dìtiě - subway 2. 乘客- dìtiě zhàn - passenger 3. 换乘- huàn chéng - transfer 4. 安检- ān jiǎn - security check 5. 座位- zuò wèi-seat 6. 让座- ràng zuò - give up one's seat 7. 拥挤 - yōng jǐ - crowded 8. 扶手-fú shǒu-handrail