| 正面 | 2099.twenty 英 ['twentɪ]美 ['twɛnti]     |
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| 背面 |     释义： 1. lust => list.2. listen => list.n. 二十；二十年代num. 二十adj. 二十的 例句： 1. Brian counted to twenty and lifted his binoculars. Elena did the same.布赖恩数到20，举起了双筒望远镜。埃琳娜也照着做了。 twenty 二十来自 two,二，-ty,十，词源同 ten. twentytwenty: [OE] Twenty is etymologically ‘two tens’. The second syllable, -ty, is related to ten, and twen- goes back to the same source as two, although its precise ancestry is not clear.=> ten, twotwenty (n.)Old English twentig "group of twenty," from twegen "two" (see two) + -tig "group of ten" (see -ty (1)). Cognate with Old Saxon twentig , Old Frisian twintich, Dutch twintig, Old High German zweinzug, German zwanzig. Gothic twai tigjus is even more transparent: literally "two tens." The card game twenty-one (1790) is from French vingt-et-un (1781). Twenty-twenty hindsight is first recorded 1962, a figurative use of the Snellen fraction for normal visual acuity, expressed in feet. The guessing game of twenty questions is recorded from 1786." |