Eight is the double of four. 8
是4
两倍。
, 
, 人, 虚伪份人两倍, (使)加倍
层人房层甲板星（紧密相连二颗星，借望远镜始可分辨者）人床效；
效果；影响边；面板；面材质键征税；[经]复课税击；击鼠标螺旋声道，声轨（录音磁带）线（线路）；二线；隔行
；层墙箕；环路影频；频率阳节Eight is the double of four. 8
是4两倍。
Ten is the double of five.
十是五两倍。
The dog doubled on its tracks .
狗急忙折回逃跑。
The fox doubled (back) on its tracks.
狐狸突然转身急逃。
The baby doubled its weight in a year.
那婴儿一年中体增加了一倍。
The wounded tigress was now roaring double tides.
那只受伤母老虎正在怒吼。
Compared with diolefine rubber,EPDM has less double bond.
与二烯烃橡胶相比,EPDM键很少。
A double salt of platinous cyanide and another cyanide.
由于氰化铁氧化而形成氰铁酸盐。
He suddenly doubled and ran in the opposite direction.
他突然转身, 朝相反方向跑去。
They all doubled up when I told my joke.
当我讲笑话时, 他们都笑得直不起身子来。
He doubled as coach and captain of the team.
他担任教练兼队长。
This pneumatic tool will double the speed of assembly.
这个气动工具可以把装配速度提高一倍。
The total output is double that of last year.
总产量是去年两倍。
Tony glanced at her, then did a double take .
托尼瞥了她一眼，过后才恍然大悟。
The house has doubled in value since I bought it.
自从我买下这幢房子以来, 它价值已增加了一倍。
She paired off with Alice in a tennis doubles match.
她在网球打比赛中与阿莉斯结成一对。
Field cancerization was the base of double primary lung cancer.
区域性癌化是原发性肺癌发生病理基础。
Proposes pictureencryption algorithm based on the double unidimensional chaos system.
摘要 提出了一个基于一维混沌系统图像加密算法。
She doubled the sheet of the paper and put it away.
她把这张纸折起来放到一边。
She doubled as the maid and the secretary in the play.
她在这出剧里兼饰女佣和秘书。
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