Chuán shàng de pùwèi hěn zhǎi, zhǐ néng cèshēn shuì.
The berths on the ship were very narrow, so you could only sleep on your side.
Tips
usage
On Chinese trains, bunks are classified as 上铺 (upper bunk), 中铺 (middle bunk), and 下铺 (lower bunk). 下铺 is the most sought-after as it is easiest to access.
