The orbits of planets in the once popular geocentric Ptolemaic system are epitrochoids.曾经盛行的托勒密地心说体系里的行星轨道就是外旋轮线.Mars and Earth have orbits which change with time...火星与地球的运行轨道随着时间而变化。Other enumeration problems lead us to...

These are selections from ten thousand.这些是从一万个里挑选出来的.Using Greek sources, he compiled in Latin selections from elementary treatises on arithmetic, geometry, and astronomy.他根据希腊材料用拉丁文选编算术 、 几何与天文的初等读物.View selections, dim...

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显微电影照相术...

n.螺的轴柱，壳轴，小柱( columella的名词复数 )，柱状层...

n.出界，界限，在（某人允许进入的）界限以外，出格的，跳跃( bound的名词复数 )，界限，（球等的）反跳...

jackingbolt的音标：jackingbolt的英式发音音标为：[dʒækɪŋ'bəʊlt]jackingbolt的美式发音音标为：[dʒækɪŋ'boʊlt]...

n.女发言人，女代言人...

黑盘孢科...

lungworm的音标：lungworm的英式发音音标为：['lʌŋwɜ:m]lungworm的美式发音音标为：['lʌŋwɜm]...

Atelopcdidae的音标：...

In more elaborate weddings the best man will be assisted by several groomsmen and a ringbearer.在更为盛大的婚礼上,伴郎会由几个男傧相和一名男花童相伴....

n.水铝英石...

woodland的音标：woodland的英式发音音标为：['wʊdlənd]woodland的美式发音音标为：['wʊdlənd, -ˌlænd]...

She virtually never mentions him in her corre-spondence or notebooks.她在书信和笔记中几乎从不提及他。Marco Polo's travelogue mentions that Kublai Khan sent envoys to Malgache.马可波罗游记中提到忽必烈曾派使节到马尔加什.Tom mentions that he often sees he...

logrolled的音标：...

dowsing的音标：dowsing的英式发音音标为：[daʊzɪŋ]dowsing的美式发音音标为：[daʊzɪŋ]...

精子形成障碍，生精障碍...

n.前桅哨...

He became romantically involved with a married woman.他与一位已婚妇女产生了恋情。We are not romantically involved.我们并不是男女朋友关系。Yossariun kissed her ears and her closed eyes romantically and rubbed the backs of her thighs.尤索林痴情地亲了亲地的耳朵和...

v.共同保险，共同担保( coinsure的过去式和过去分词 )...

to commit suicide自杀He brooded on whether she should commIt'suicide.他想她是不是死于自杀.There are unconfirmed reports he tried to commit suicide.有未经证实的报道说他曾企图自杀。...

Fill in the coupon and send it first class to the address shown.填写订单，并按一类邮件寄至注明的地址。Detach the coupon and return it as soon as possible.将赠券撕下后尽快寄回。...a 50p money-off coupon.可以便宜50便士的优惠券He was filling in his pools coupon.他...

dispensations的音标：...

giorgiosite的音标：giorgiosite的英式发音音标为：[d'ʒaɪədʒi:əʊsɪt]giorgiosite的美式发音音标为：[d'ʒaɪədʒioʊsɪt]...

roll up的音标：roll up的英式发音音标为：[rəul ʌp]roll up的美式发音音标为：[rol ʌp]...

adj.干旱的，干燥的...

Such omens betide no good.这种征兆预示情况不妙.Now, as you obsesses over the omens of war, we wonder if you know yourself Atwood.可是, 现在战争的预兆萦系你心, 我们真不知道你是否还了解你自己.propitious omens吉兆The omens for the game are still not propitious.这场...

n.硬纸板...

Cal took a long, deep breath, struggling to control his own emotions.卡尔深长地吸了一口气，努力控制自己的情绪。Cal took a long, deep breath, struggling to control his own emotions...卡尔深长地吸了一口气，努力控制自己的情绪。As the deadline approached she experie...