vacuum

英 ['v?kj??m] 美['v?kj??m]

近義詞clean sweep

CET4TEM4IELTS考研TOEFLCET6中低頻詞常用詞匯

復數:?vacua;第三人稱單數:?vacuums;過去式:?vacuumed;過去分詞:?vaccumed;現在分詞:?vacuuming;

vacuum 真空

詞源同vacant,空著的，用于指真空。

vacuum (v.): "to clean with a vacuum cleaner," 1919, from vacuum (n.). Related: Vacuumed; vacuuming.
vacuum (n.): 1540s, "emptiness of space," from Latin vacuum "an empty space, vacant place, a void," noun use of neuter of vacuus "empty, unoccupied, devoid of," figuratively "free, unoccupied," related to vacare "be empty" (see vain). Properly a loan-translation of Greek kenon, literally "that which is empty." Meaning "a space emptied of air" is attested from 1650s. Vacuum tube "glass thermionic device" is attested from 1859. Vacuum cleaner is from 1903; shortened form vacuum (n.) first recorded 1910.
The metaphysicians of Elea, Parmenides and Melissus, started the notion that a vacuum was impossible, and this became a favorite doctrine with Aristotle. All the scholastics upheld the maxim that "nature abhors a vacuum." [Century Dictionary]

1. The Marshal stepped over the vacuum-cleaner and stumped out of the room.: 元帥邁過真空吸塵器，腳步沉重地走出了房間。

2. Vacuum-packed ham slices should be unwrapped 30 minutes before serving.: 真空包裝的火腿片應在食用前30分鐘把包裝除去。

3. The collapse of the army left a vacuum in the area.: 這支軍隊的潰敗使這個地區出現了軍事真空。

5. We lived in a vacuum — no life, no news, no books.: 我們生活在與世隔絕的環境里——沒有其他生物，收不到外界消息，也沒有書看。