(1)abacus n.算盘#['QbEkEs] n.
(2)accident n.事故,意外的事#['QksIdEnt] n.
(3)accurate adj.精确的#['QkjurEt] adj.
(4)ancient adj.古代的,古老的#['eInSEnt] adj.
(5)announcement n.通告,宣告,公告,发表#[E'naunsmEnt] n.
(6)at least 至少#[Qt lI:st] advphr.
(7)bead n.珠子,念珠,滴 vi.形成珠状,起泡 vt.用珠装饰,使成串珠状#[bi:d]n/vi/vt.
(8)*bottom n.底,底部#['bOtEm] n.
(9)brain n.脑袋,头脑,智力 vt.猛击...的头部#[breIn] n/vt.
(10)calculate vi.计算,作打算,以为 vt.计算,打算,预测,认为#['kQlkjuleIt] vi/vt.
(11)calculation n.计算,估计,深思熟虑,计算的结果#[;kQlkju:leISEn] n.
(12)calculator n.计算器,计算者#['kQlkjuleItE] n.
(13)change vi/vt.改变,变化#[tSeIndZ] vi/vt.
(14)check vt.核查,查明#[tSek] vt.
(15)consist of 由...构成#[kEn'sIst Ov] vphr.
(16)count vi/vt.数,点数#[kaunt] vi/vt.
(17)decide on 决定,选定#[dI'saId On] vphr
(18)decide vi/vt.决定#[dI'saId] vi/vt.
(19)decimal adj.小数的,十进位的 n.小数#['desImEl] adj/n.
(20)decision n.决定#[dI'sIZn] n.
(21)*degree n.度数,程度#[dI'gri:] n.
(22)develop vi/vt.开发,发展#[dI'velEp] vi/vt.
(23)divide vt/vi.划分,分#[dI'vaId] vt/vi.
(24)double n&adj.两倍(的),双精度型(的) vt&vi.加倍,快步走 adv.两倍地,双重地,弓身地#['dVbl] n/adj/vi/vt/adv.
(25)Egyptian adj.埃及的,埃及人的 n.埃及人,古代埃及语#[I'dZIpSEn] adj/n.
(26)*electronic adj.电子的#[I'lek'trOnIk] adj.
(27)*equal vt.等于#['i:kwEl] vt.
(28)especially adv.特别,尤其#[I'speSElI] adv.
(29)even adv.甚至#['i:vn] adv.
(30)fellow n.同事,家伙,朋友,会员 adj.同伴的,同事的,同道的 vt.使...与另一个对等,使...与另一个匹敌#['felEu] n/adj/vt.
(31)figure n.图形,数字,(人的)体形,人物,画像,价格 vi.出现,计算,扮演角色 vt.描绘,计算,认为,象征#['fIgE] n/vi/vt.
(32)flash n.闪光,闪现,一瞬间 vt.使闪光,反射 vi.闪光,闪现,反射 adj.闪光的,火速的#[flQS] n/vt/vi/adj.
(33)flight n.飞行,航班#[flaIt] n.
(34)fraction n.小部分,部分,稍微#[数]分数#['frQkSEn] n.
(35)however adv.但是#[hau'evE(r)] adv.
(36)in a flash 瞬间,立刻#[In eI flQS] pphr.
(37)Indian n/adj.印度(人)的,印度人#['IndIjEn] n/adj.
(38)instruction n.指令,命令,指示,用法说明,教导#[In'strVkSEn] n.
(39)*international adj.国际的#[;IntE'nQSnEl] adj.
(40)invent vt.发明,创造#[In'vent] vt.
(41)invention vt.发明物,创意#[In'venSEn] vt.
(42)kid vt.小孩#[kId] vt.
(43)minus prep.减(去)#['maInEs] prep.
(44)multiply vt.乘,使相乘,使增加,使繁殖 vi.繁殖,增加,乘 adv.多样地,复合地 adj.多样的,多层的#['mVltIplaI] vt/vi/adv/adj.
(45)nearly adv.几乎,将近#['nIElI] adv.
(46)odd adj.奇数的,古怪的,临时的,剩余的,零散的 n.奇数,奇特的事物,怪人#[Od] adj/n.
(47)*percentage n.百分率,百分数#[pE'sentIdZ] n.
(48)plus n.正号,加号,附加额,好处 adj.正的,附加的 prep.加,加上#[plVs] n/adj/prep.
(49)powerful adj.强大的,有力的#['pauEful] adj.
(50)rise vi.升起#[raIz] vi.
(51)separately adv.分离地,分别地,个别地#['sepErItlI] adv.
(52)square root 平方根,二次根#[skwCE rut] nphr.
(53)stand for 代表,支持,象征,担任...的候选人#[stQnd fO:] vphr.
(54)subtract vt.减去,扣掉#[sEb'trQkt] vt.
(55)*system n.系统#['sIstEm] n.
(56)times n.(复数)时代,时期#[taImz] n.
(57)total n.总数,总和#['tEutl] n.
(58)traffic n.交通,来往车辆#['trQfIk] n.
(59)wire n.金属丝,电线,电报 vt.拍电报,给...装电线 vi.打电报#['waIE] n/vt/vi.
