roof

英 [ru?f] 美[ruf]

反義詞

CET4TEM4考研CET6中頻詞核心詞匯

復(fù)數(shù):?roofs;第三人稱單數(shù):?roofs;過去式:?roofed;過去分詞:?roofed;現(xiàn)在分詞:?roofing;

roof 頂部，屋頂

來自古英語 hrof,屋頂，天花板，天空。

roof: roof: [OE] The antecedents of roof are far from clear. Its only surviving relative seems to be Dutch roef ‘cabin, coffin lid’, and although it also had links with Old Norse hróf ‘boat-shed’, its ultimate origins remain a mystery.
roof (n.): Old English hrof "roof, ceiling, top, summit; heaven, sky," also figuratively, "highest point of something," from Proto-Germanic *khrofam (cognates: Old Frisian rhoof "roof," Middle Dutch roof, rouf "cover, roof," Dutch roef "deckhouse, cabin, coffin-lid," Middle High German rof "penthouse," Old Norse hrof "boat shed").

No apparent connections outside Germanic. "English alone has retained the word in a general sense, for which the other languages use forms corresponding to OE. t?c thatch" [OED]. Roof of the mouth is from late Old English. Raise the roof "create an uproar" is attested from 1860, originally in U.S. Southern dialect.
roof (v.): early 15c., from roof (n.). Related: Roofed; roofing.

2. Water tanks should be well lagged and the roof well insulated.: 水箱和屋頂都需要敷設(shè)嚴密的保溫層。

3. Goldsmith has repaired the roof to ensure the house is wind-proof.: 戈德史密斯修理了屋頂，以確保房屋能夠抗風(fēng)。

4. Mills have iron pillars all over the place holding up the roof.: 工廠里四處都立有鐵柱支撐著房頂。

5. Last night some of the prisoners appeared on the roof.: 昨晚，其中幾個犯人出現(xiàn)在房頂上。