| 单词 | 桨叶 |
| 释义 | 〔propeller〕A machine for propelling an aircraft or a boat, consisting of a power-driven shaft with radiating blades that are placed so as to thrust air or water in a desired direction when spinning.螺旋桨：推进飞行物或船只的机构，由动力推动的轴和当旋转时按理想的方向注入水或空气的呈辐射状的桨叶组成〔pilot〕The pilot of an aircraft flying through the air has a foot on the ground not literallybut etymologically.If we poke around in the etymological soil for the roots of the wordpilot, we find that it goes back to the Indo-European rootped-, meaning "foot.” From the lengthened-grade suffixed formpēdo- came the Greek word pēdon, "blade of an oar,” and in the plural, "rudder.” In Medieval Greekthere is assumed to have existed the derivativepēdōtēs, "steersman,” which passed into Old Italian and acquired several forms,includingpedota, and pilota, the form that was borrowed into Old French aspilot. English borrowed the word from French,and aspilot it has moved from the water to the air, first being recorded in 1848 with reference to an airborne pilot—a balloonist.飞行员一脚踩地飞进天空这句话字面上虽讲不通，但在词源上却可以。如果为找到pilot 的根源而溯其词源， 我们会发现它源自印欧语系词根ped- 意为“脚”。 从加长的这个词根的后缀形式pedo- 我们得到希腊词语 pedon “桨叶”及复数形式，“舵”。 在中世纪的希腊，据称曾存在派生词pedotes “舵手”， 该词进了古意大利语并添了一些形式，包括pedota 和 pilota ， 这些形式被法语借用过来，便成了pilot 。 英语又借自法语，随着pilot 从水上被移用到天上， 于1848年第一次用来指天上飞行员——热气球驾驶员 |
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