| 词汇 | blade |
| 词根词缀 | 词源： O.E. blæd "a leaf," but also "a leaf-like part" (of spade, oar, etc.), from P.Gmc. *bladaz (cf. O.Fris. bled "leaf," Ger. blatt, O.N. blað), from PIE *bhle-to-, suffixed form (p.p.) of *bhel- (3) "to thrive, bloom," possibly identical with *bhel- (2) "to blow, swell" (see bole). Extended in M.E. to shoulders (c.1300) and swords (early 14c.). The modern use in reference to grass may be a M.E. revival, by influence of O.Fr. bled "corn, wheat" (11c., perhaps from Germanic). The cognate in Ger., blatt, is the general word for "leaf;" laub is used collectively as "foliage." O.N. blað was used in reference to herbs and plants, lauf in reference to trees. This might have been the original distinction in O.E., too. 词根记忆： n. 刀刃,刀片;桨叶;草叶,叶片The academic topic is why the blade of the spade is still sharp after decades' decay.学术话题是为什么铁锨刃口经过几十年的腐烂之后仍然锋利. |
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