rudder: [OE] Rudder comes from the same source as English row ‘use oars’ – prehistoric Germanic *rō- ‘steer’. Indeed it originally denoted an ‘oar used for steering’; the modern application to a fixed steering surface did not emerge until the 14th century. Its west Germanic ancestor *rōthra- also produced German ruder and Dutch roer. => row
rudder (n.)
mid-15c. alteration of Middle English rother, from Old English roeor "paddle, oar," from Proto-Germanic *rothru- (cognates: Old Frisian roeer, Middle Low German roder, Middle Dutch roeder, Dutch roer, Old High German ruodar, German Ruder "oar"), from *ro- "steer" (see row (v.)) + suffix -tra, used to form neutral names of tools.
Meaning "broad, flat piece of wood attached to the stern of a boat and guided by a tiller for use in steering" is from c. 1300. For shift of -th- to -d- compare burden (n.1), murder (n.); simultaneous but opposite to the movement that turned -d- to -th- in father (n.), etc.
雙語例句
1. It was not yet clear how the rudder had sheared off.
還不清楚船舵是如何斷裂的。
來自柯林斯例句
2. Turn the rudder slightly so that we can ease the boat round.
慢慢掌舵,這樣我們就能使船穩(wěn)穩(wěn)地拐過去.
來自《簡(jiǎn)明英漢詞典》
3. An oar often acts as rudder.
槳?？善鸲娴淖饔?
來自《簡(jiǎn)明英漢詞典》
4. There is no rudder as such, so the craft can be steered only when under power.
沒有真正的方向舵，所以只有在動(dòng)力驅(qū)動(dòng)的情況下才能操控船只。
來自柯林斯例句
5. A sailor uses the rudder to make the ship go in the correct direction.