右旋异构体...

The amount of nicotine in these nicotine substitutes can be enough to excite the heart.这些尼古丁替代品中的烟碱含量足以刺激心脏。Lawrence is one of those writers who either excite you enormously or leave you cold.劳伦斯是那种要么让人激动不已，要么让人觉得索然无味的作家...

Owen was against it, on the grounds of expense.欧文因费用问题对此表示反对。I'll try to save him the expense of a flight from Perth.我会设法替他省下要从珀斯飞来的机票费用。He put Elizabeth's motel bill and airfare on his expense account.他将伊丽莎白住汽...

吗乙环戊酮，环沙酮...

n.挠性塑料...

exact的比较级为：exacter...

n.外鞘...

adv.逃不掉地，解决不了地，形影不离地，不可解脱...

exclaimed的音标：...

excused的音标：...

exquisite的最高级为：most exquisite...

金雀花碱...

expectorating的音标：...

电气英石岩...

amylorrhexis的音标：amylorrhexis的英式发音音标为：[əmɪlɒ'reksɪs]amylorrhexis的美式发音音标为：[əmɪlɒ'reksɪs]...

n.极端( extreme的名词复数 )，极端政策（或办法、手段、行动、措施等），极端不同的感情（或境况、行为方式等），[常用复数]在两末端的事物...

adj.使耗尽的，使人精疲力竭的v.用尽( exhaust的现在分词 )，使非常疲倦，详尽讨论（或研究），弄空...

Your open pores excrete sweat and dirt.通过张开的毛孔排出汗液和污垢。The function of the kidneys is to excrete wastes from the body.肾的功能是排泄人体里的废物.The function of the kidneys is to excrete waste products.肾脏的功能是排泄代谢废物....

extracting的音标：extracting的英式发音音标为：[ɪks'træktɪŋ]extracting的美式发音音标为：[ɪks'træktɪŋ]...

extirpating的音标：...

vt.说明…的原因，辩解vi.说明，解释，辩解...

This system is being tried out experimentally at many universities.该系统正在很多大学试用。In my opinion, the curvature was determined experimentally.依我看, 这种曲度是根据实验确定的.This machine was introduced experimentally in 1960.这台机器是在1960年被试...

excitation的音标：excitation的英式发音音标为：[ˌeksaɪ'teɪʃən]excitation的美式发音音标为：[ˌeksaɪ'teɪʃən]...

exteriority的音标：exteriority的英式发音音标为：[eksˌtɪərɪ'ɒrətɪ]exteriority的美式发音音标为：[eksˌtɪrɪ'ɒrətɪ]...

homosexuals的音标：homosexuals的英式发音音标为：[hɒmə'sekʃʊəlz]homosexuals的美式发音音标为：[hɒmə'sekʃʊrlz]...

expunge的现在进行时为：expunging...

n.同向双工器，天线分离滤波器，天线共用器，两信伴传机...

n.程度( extent的名词复数 )，长度，广大地域，被扩展的东西...

v.驱逐( expel的过去式和过去分词 )，赶走，把…除名，排出...

external的复数形式为：externals...