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prep (1)減(除)(made less or reduced by subtraction of)：Ten～two leaves/equals/is equal to/is eight(10-2=8). 10減2等于8。What is 98～76? 98減76等于多少?

(2)無，缺少(without，lacking)(infml)：～a toe/a leg(缺)少一腳趾/條腿;a book～its title page 沒有扉頁的書;She arrived～her wallet/umbrella/gloves.她沒帶錢包/帶雨傘/戴手套就來了。At this minute，I'm～a cook. 眼下我正缺少一個廚師。

(3)零下，冰點(diǎn)以下(bellow the freezing point of water)：～four degrees/six degrees 零下4/6度;a～temperature冰點(diǎn)以下的溫度;Temperature could fall to～20°. 溫度會降到零下20度。.

n (1)減(負(fù))號(the sign(-)used to indicate subtraction or a negative number)[C](=minus sign)：pluses and～es 加減號;Two～es make a plus.負(fù)負(fù)得正。There should be a～there.那兒應(yīng)有一個“-”號。

(2)缺點(diǎn)，不利條件(drawback or disadvantage)[C](infml)：a terrible～可怕的缺點(diǎn);the pluses and～es of buying the house買這所房子的利與弊;Having to travel such a long way to work is a definite～.上班走這么遠(yuǎn)的路當(dāng)然不利。

adj (1)略低于標(biāo)準(zhǔn)的(slightly lower or less than the stated standard)[作pred]：a C～mark 分?jǐn)?shù)為C^-;a grade of C～ in English 英語成績得C^-;I got A～for last week's composition.我上周的作文得了A^-。

(2)負(fù)數(shù)(的)(negative number or amount less than zero)：a～value/quantity負(fù)值/量;His bank balance is definitely in～figures.他銀行的余額肯定是負(fù)數(shù)。