huǒ chē / chē xiāng / zhī jiān / de / huǎn chōng qì / néng / jiǎn qīng / pèng zhuàng / shí / de / zhèn dòng

火车车厢之间的缓冲器能减轻碰撞时的震动。

The buffers between train cars can reduce the impact of collisions.