歹徒突然掏出刀刺向受害者。

The attacker suddenly pulled out a knife and started ___stabbing the victim.

滑雪者在雪地上快速滑行，像刀切黄油般穿过山坡。

The skier was ___knifing through the snow like a blade cutting butter.

当公司毫无预警地解雇他时，他感到心如刀割。

He felt ___knifed when the company fired him without warning.