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adj (1)明確(確實，無疑)的 (clear and definite; leaving no room for doubt)：～instructions/orders/rules/reasons 明確的指示/命令/規(guī)則/原因;a～proof/answer/evidence/refusal確證/明確的答復(fù)/明確的證據(jù)/直接了當(dāng)?shù)木芙^;We have～knowledge that the earth moves around the sun. 我們確知地球圍著太陽轉(zhuǎn)?！纪絚onclusive， firm， definite;

(2)(指人)確信無疑(肯定)的 ((of a person) quite certain; having no doubt about sth) [A(about/of)， A+that][作pred]： be quite～about the amount of the money involved/what one sees 對所涉及的錢數(shù)/自己所看見的事相當(dāng)肯定;I'm absolutely～that it was after midnight/I can win/he's right. 我肯定那是在午夜以后/我能贏/他是對的?！癆re you sure?” “P～.” “你肯定嗎?”“肯定?！薄纪絪ure，certain; 〖反〗unsure，doubting，uncertain;

(3) 1)有幫助的，積極(建設(shè)性)的 (helpful; constructive)：～criticism 積極的批評;make～proposals/suggestions 提出積極的建議;have some～ideas on sth 對某事有積極的想法;be～in dealing with the problem 積極地解決問題;give sb～advice as to how to do sth 對如何做某事提出建設(shè)性的意見;〖同〗practical，constructive，useful，helpful，beneficial; 〖反〗negative，useless; 2)有信心的，樂觀的 (showing confidence and optimism about the future)： take a more～attitute to life 對生活抱有更為樂觀的態(tài)度;a～view of one's future 對自己的未來充滿信心;a～feeling 樂觀的感覺(態(tài)度);What we need is～thinking! 我們所需要的是信心十足!〖同〗optimistic，progressive; 〖反〗negative;

(4)完全(絕對)的 (absolute; complete; thorough) [無comp][作attrib] (infml)： That man is a～fool/idiot/nuisane/liar. 那個人簡直是一個傻瓜/白癡/討厭的家伙/謊話大王。It is a～disgrace/delight/crime to do ... 做……簡直是恥辱/樂趣/犯罪。It was a～miracle that they won the game. 他們贏了比賽簡直是個奇跡。find cooking a～pleasure 發(fā)現(xiàn)烹飪完全是一種享受;〖同〗real， absolute， complete， total;

(5)(指(醫(yī)學(xué))實驗的結(jié)果)呈陽性反應(yīng)的 ((of the results of a (medical) test or an experiment) indicating that a substance is present; showing signs of disease)： a～reaction/result 陽性反應(yīng)/結(jié)果;a～pregnancy test 呈陽性反應(yīng)的懷孕檢測;The blood test was～and you'll need to have an operation. 驗血結(jié)果為陽性，你得做手術(shù)?！挤础絥egative;

(6)(指數(shù)或量)正的，大于零的 ((of a number or quantity) greater than zero) [無comp]： a～number/amount/quantity 正數(shù)/量/量;the～sign 正號 (即“+”號);〖反〗negative;

(7)趨于增加(改善)的，積極的 (tending towards increase or improvement)： P～progress has been achieved during the negotiations. 談判已經(jīng)取得了積極的進展。～developments in international relations 國際關(guān)系的良好發(fā)展;～discrimination (尤指就業(yè)政策中有意偏向于下層社會群體的)積極的區(qū)別對待;a～upturn in the stock market 股票市場看好;

(8)正電極的 (of or for the kind of electricity produced by rubbing glass with silk) [無comp]： a～charge 正電荷;～pole (電池，磁鐵等的)正極;the～end of a battery 電池的正極;In an electrical circuit， electrons flow to the～terminal. 在電路中，電子流向正極?！挤础絥egative;

(9)(相片)正片的 ((of a photograph) showing light and dark as in nature but not the other way round) [無comp]： a～image 正影象;〖反〗negative;

(10)(形容詞或副詞)原級的 ((of an adjective or adverb) showing a form that is not the comparative or superlative) [無comp] (gram)： The～form of better and best is good. better和best的原級形式是good。

→′positively adv 絕對地;斷然(確定)地;′positiveness n絕對;斷然;肯定;

n(1)(形容詞或副詞的)原級 (positive form of an adjective or adverb) [C](gram)： The～of worst is bad. worst的原級是bad。

(2)(相片)正片 (positive photograph) [C];

(3)正量(數(shù)) (quantity that is greater than zero) [C]： Twenty is a～. 20是一個正數(shù)?！挤础絥egative;

【辨異】positive與certain、sure和confident的區(qū)別見CERTAIN。