Meaning of kǎ zhù:
kǎ zhù
卡住
Verb
to jam; to choke; to clutch; also pr. [qia3 zhu4]
Jīqì bèi zhǐ kǎ zhù le.
机器被纸卡住了。
The machine is jammed by the paper.
Tā zài chīfàn shí bù xiǎoxīn bèi yú gǔtóu kǎzhù le.
他在吃饭时不小心被鱼骨头卡住了。
He accidentally got choked by a fishbone while eating.
Mén bèi kǎ zhù le, dǎ bù kāi.
门被卡住了,打不开。
The door is jammed and won't open.
Mén fèng bèi yī gè xiǎo wán jù kǎ zhù le.
门缝被一个小玩具卡住了。
A small toy got stuck in the door gap.