| 词汇 | double |
| 词根词缀 | 词源： early 13c., from O.Fr. duble, from L. duplus "twofold," from duo "two" + -plus "fold." Verb meaning "to work as, in addition to one's regular job" is c.1920, circus slang, from performers who also played in the band. Double-header is first recorded 1869, Amer.Eng., originally a kind of fireworks or a railway train pulled by two engines; baseball sense is c.1890. Double Dutch "gibberish" is attested from 1864 (High Dutch for "incomprehensible language" is recorded from 1789). Double agent is first attested 1935; double date is from 1931. Double-take and double talk both first attested 1938. Military double time (1833) was originally 130 steps per minute; in modern U.S. Army 180 steps of 36 inches in a minute. To double park a motor vehicle is recorded from 1931. 词根记忆： a. 两倍的;双重的ad.两倍地n.两部v.加倍I debated that the debtor was doubtless in double troubles.我争论说债务人很可能处在双重困境中. a. 翻倍[du,dub,doub=two,表示"二,双"] 词根词缀： double double a 翻倍du,dub,doub=two,表示”二,双”dual a 二重的,二元的(du+al) duality n 二重的性(dual+ity) duel n 决斗(du+el[=bell斗]=二个人斗=决斗) dubious a 半信半疑的(dub+ious_二种状态=不肯定,怀疑的) indubitable a 无可置疑的(in不+dubitable可怀疑的) doubt n 怀疑(doubt二=二种状态=怀疑) doubtful a 可疑的,怀疑的(doubt+ful) duplicate v 加倍,复制(du+pic 重复+atc=重复第二份=复制) duplicity n 二心,口是心非(du+plic重复+ity=二种重复状态=二心) duplex a 二重的,二倍的(du+plex重叠=二重的) double a 翻倍 |
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