knife 刀The knife is so dull that it will not cut. 刀子太钝了, 割不开东西。 blade 刀口, 刀刃sword 剑, 刀 Save your blade for choping onions.收起你的刀，留着回家切洋葱吧。They are armed with swords and guns. 他们装备着刀和枪。 dagger 匕首; 短剑The bad news is a dagger to his heart.这条坏消息刺痛了他的心。stylet 短剑,匕首,探针dirk 匕首; 短剑
