英音 
[naɪf]
 
美音 
[naɪf]
 

knife 基本解释
n.刀；匕首；刃部；手术刀
vt.切割，刺；伤害
vi.劈开；划过

A nasty man with a knife can injure people .
一个带刀的歹徒可以伤害别人。
Eg. he boiled his syringe and fired his knife to sterilize them .
他把注射器放到水中煮，把刀子放在火上烧来进行消毒。
Jake takes the knife and cuts grace free .
jake接过小刀，切断了绑在grace手上的绳子。
The brothers only drew strength from the darkened cell and the torturer 's knife .
兄弟会的力量只能来自阴暗者，以及施暴者的匕首。