So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我們所知道的現(xiàn)有恒星數(shù)目估計約有30億×1000億顆。
新概念英語第四冊 Lesson 43 Are there strangers in space

?? 句中詞匯解析

從本句中提取的重要詞匯

number ['n?mb?] 詞頻1 詞根: number
n. 數(shù)字;數(shù)量;號碼;編號; v. 標(biāo)號;總計;把…算作;
?? numer, number 表示”數(shù)字”;”計算”,”估算”
"The number of people employed in agriculture has fallen in the last decade."
過去十年，農(nóng)業(yè)從業(yè)人數(shù)已經(jīng)下降。
近義：numerate, reckon, recount, sum, tally, cipher 反義：remove, subduct, take, withdraw, deduct
exist [?ɡ'z?st] 詞頻1 詞根: sist
vi. 存在;生存;生活;繼續(xù)存在;
?? ex出+ist站立→站出來→活下來→存在，生存
"There exist many sources of energy both potential and kinetic."
存在著許多勢能和動能的能源.
近義：be, live, subsist
know [no] 詞頻1 詞根: 知道
v. 知道;了解;認(rèn)識;確信; n. 知情;
?? 知道know的人愛說自己不no知道
"Do you know your ABC?"
你認(rèn)識所有的字母嗎？
近義：learn, understand, get, cognize, comprehend, meet
million ['m?lj?n] 詞頻1
n. 百萬; adj. 百萬的;無數(shù)的;
?? 百萬米(mi)再加一(l)粒(li)在上面(on) “密零”（諧音）（一百萬就是1后面有密密麻麻的零）
"The paper got clobbered with libel damages of half a million pounds."
這家報紙被罰以五十萬英鎊的誹謗損害賠償金。
estimated [['estimetid]]
a. 估算的；估計的；預(yù)計的
近義：appraisive, presupposed, valued, cherished, worthful, esteemed

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