国人精品视频在线观看_欧美成人精品一区二区_欧美一级性_中文字幕免费播放_黄色片网站在线免费观看_依依成人综合

單詞
helicopter
英 ['hel?k?pt?] 美['h?l?kɑpt?]
基本信息
  • n. [航] 直升飛機(jī)
  • vi. [航] 乘直升飛機(jī)
  • vt. 由直升機(jī)運(yùn)送
CET4TEM4IELTS考研CET6中頻詞常用詞匯

詞態(tài)變化

復(fù)數(shù):?helicopters;第三人稱單數(shù):?helicopters;過(guò)去式:?helicoptered;過(guò)去分詞:?helicoptered;現(xiàn)在分詞:?helicoptering;

中文詞源

helicopter 直升機(jī)

helico-,螺旋,-pter,翅膀,詞源同feather,pterodactyl.比喻用法。

英文詞源

helicopter
helicopter: [19] The term helicopter was coined in the mid-19th century from Greek hélix ‘spiral’ (source of English helix [16] and helical [17]) and Greek ptéron ‘wing’ (source of English pterodactyl and related to feather). The French were first in the field with hélicoptère, and the earliest record of the word in English, in 1861, was the barely anglicized helicoptere, but by the late 1880s the modern form helicopter was being used. (These 19th-century helicopters were of course a far cry from the present-day rotorblade- driven craft, which were introduced in the late 1930s; as their name suggests, they were lifted – or more usually not lifted – by rotating spiral-shaped aerofoils.)
=> feather, helical, helix, pterodactyl
helicopter (n.)
1861, from French hélicoptère "device for enabling airplanes to rise perpendicularly," thus "flying machine propelled by screws." The idea was to gain lift from spiral aerofoils, and it didn't work. Used by Jules Verne and the Wright Brothers, the word transferred to helicopters in the modern sense when those were developed in the 1920s. From Greek helix (genitive helikos) "spiral" (see helix) + pteron "wing" (see pterodactyl). Nativized in Flemish as wentelwiek "with rotary vanes."

雙語(yǔ)例句

1. A helicopter crashed in a fiery explosion in Vallejo.
一架直升機(jī)在瓦列霍爆炸起火并墜毀。

來(lái)自柯林斯例句

2. A black Mercedes screeched to a halt beside the helicopter.
一輛黑色的梅賽德斯轎車在直升機(jī)旁嘎的一聲剎住了。

來(lái)自柯林斯例句

3. She served six months in prison for the helicopter caper.
她因?yàn)橹鄙龣C(jī)一案坐了6個(gè)月牢。

來(lái)自柯林斯例句

4. The helicopter crash landed when one of its two engines cut out.
直升機(jī)的兩個(gè)發(fā)動(dòng)機(jī)中有一個(gè)停止運(yùn)轉(zhuǎn),只好迫降了。

來(lái)自柯林斯例句

5. The silence was broken by the whirring of a helicopter.
直升機(jī)的嗡嗡聲打破了沉寂。

來(lái)自柯林斯例句

helicopter相關(guān)單詞
主站蜘蛛池模板: 91精品国产综合久久国产大片 | 三级网站免费看 | 综合久久久久久久 | 激情av在线 | 久久av一区二区三区亚洲 | 久久久精品一区二区三区 | 国产一级在线 | 欧美精品一区视频 | 污免费在线观看 | 91精品国产麻豆国产自产在线 | 成人精品国产免费网站 | 自拍在线观看 | 日本黄色一区二区 | 高清性爱视频 | 欧美综合在线观看 | 激情欧美日韩一区二区 | 国产精品美女久久久免费 | 久久精品免费观看 | 午夜视频免费在线观看 | 国产在线精品一区二区 | www.一区| 999久久| 亚洲精品国产综合99久久夜夜嗨 | 日韩在线二区 | 婷婷综合在线观看 | 日本一区二区三区免费观看 | 中国一级黄色毛片 | 黄色大片网站 | 日韩欧美在线一区二区 | 黄网站在线免费 | 免费在线观看黄网站 | 一区二区福利视频 | 国产在线网站 | 一区二区三区高清不卡 | 超碰在线网站 | 亚洲视频欧美视频 | 精品国产乱码久久久久久蜜柚 | 欧美性猛交xxxxx水多 | 亚洲视频精品在线 | 色婷婷综合久久久中字幕精品久久 | 一区二区三区在线播放 |