rudder

英 ['r?d?] 美['r?d?]

GRE暢通詞匯低頻詞

復數:?rudders;

rudder 舵

來自古英語 rothor,舵，來自 Proto-Germanic*rothru,舵，來自*ro,劃，劃船，詞源同 row,-thor, 工具格后綴，詞源同 tether,weather.古英語-th-簡化為-d-,比較 burden,來自古英語 byrthen.

rudder: 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.

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穩地拐過去.

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，所以只有在動力驅動的情況下才能操控船只。

5. A sailor uses the rudder to make the ship go in the correct direction.: 水手用舵導航.