屈膝

qū xī tóu xiáng

屈膝投降

fall to one's knees in surrender

jué bù xiàng dí rén qū xī

决不向敌人屈膝。

Never surrender to the enemy.

bēi gōng qū xī

卑躬屈膝

grovel

qū xī qǐng hé

屈膝请和

bow down to sb and sue for peace

qū xī qiú ráo

屈膝求饶

capitulate to somebody and beg for mercy