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

(2)无，缺少(without，lacking)(infml)：～a toe/a leg(缺)少一脚趾/条腿;a book～its title page 没有扉页的书;She arrived～her wallet/umbrella/gloves.她没带钱包/带雨伞/戴手套就来了。At this minute，I'm～a cook. 眼下我正缺少一个厨师。

(3)零下，冰点以下(bellow the freezing point of water)：～four degrees/six degrees 零下4/6度;a～temperature冰点以下的温度;Temperature could fall to～20°. 温度会降到零下20度。.

n (1)减(负)号(the sign(-)used to indicate subtraction or a negative number)[C](=minus sign)：pluses and～es 加减号;Two～es make a plus.负负得正。There should be a～there.那儿应有一个“-”号。

(2)缺点，不利条件(drawback or disadvantage)[C](infml)：a terrible～可怕的缺点;the pluses and～es of buying the house买这所房子的利与弊;Having to travel such a long way to work is a definite～.上班走这么远的路当然不利。

adj (1)略低于标准的(slightly lower or less than the stated standard)[作pred]：a C～mark 分数为C^-;a grade of C～ in English 英语成绩得C^-;I got A～for last week's composition.我上周的作文得了A^-。

(2)负数(的)(negative number or amount less than zero)：a～value/quantity负值/量;His bank balance is definitely in～figures.他银行的余额肯定是负数。