lugubrious adj. 悲哀的(mournful)；憂郁的(dismal)
［例］Much of the clown’s success may be attributed to the contrast between the lugubrious manner he adopts and the general hilarity that characterizes the circus.
［同］melancholy, dolesome, dolorous, lamentable, plaintive
luminous adj. 發(fā)光的(emitting or reflecting usually steady, suffused, or glowing light)；發(fā)亮的(of or relating to light or to luminous flux)；光線亮的(bathed in or exposed to steady light)；明白易懂的(clear, enlightening)；有光澤的(shining, illustrious)
［記］詞根記憶：lumin(光)+ous→發(fā)光的
［例］Although supernovas are among the most luminous of cosmic events, these stellar explosions are often hard to detect, either because they are enormously far away or because they are dimmed by intervening dust and gas clouds.
lucrative adj. 賺錢的，有利可圖的(profitable；remunerative)
［記］詞根記憶：lucr(看作lucre錢財)+ative→賺錢的
［例］Burdened by debt, Lydgate abandons his dreams of reforming medicine to take a conventional but lucrative practice in London.
［同］advantageous, gainful, profitable, remunerative
來自www.Examw.com
ludicrous adj. 荒唐可笑的(so foolish as to cause disrespectful laughter)
［記］詞根記憶：lud(玩)＋icrous→鬧著玩的→可笑的
［例］Although his attempts to appear psychotic were so clumsy as to be almost ludicrous , there is evidence that Ezra Pound was able to avoid standing trial for treason merely by faking symptoms of mental illness.
［同］laughable, comic, comical, droll, farcical
GRE，全稱Graduate Record Examination，中文名稱為美國研究生入學考試，適用于除法律與商業(yè)外的各專業(yè)。由美國教育考試服務處(Educational Testing Service，簡稱ETS)主辦，GRE是美國、加拿大的大學各類研究生院（除管理類學院，法學院）要求申請者所必須具備的一個考試成績，也是教授對申請者是否授予獎學金所依據(jù)的最重要的標準。 另有，Generic Routing Encapsulation（通用路由封裝）也簡稱GRE。
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