blade英 [bleɪd] 美 [bled]
1.N-COUNT The blade of a knife, axe, or saw is the edge, which is used for cutting. 刃例：Many of them will have sharp blades.他们很多都会有锋利的刃。
2. N-COUNT The blades of a propeller are the long, flat parts that turn around. (螺旋桨的) 桨叶3. N-COUNT The blade of an oar is the thin flat part that you put into the water. (船桨的) 桨叶4. N-COUNT A blade of grass is a single piece of grass. 草叶。
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