exceed vt. （常與by連用）超過，超出
    exceeding the speed limit 超速
    to exceed one's authority 越權(quán)
    The cost will not exceed $50. 費(fèi)用不會(huì)超過50美元。
    The results of the competition exceeded our expectations. 比賽的結(jié)果比我們預(yù)料的好。
    Experiment n. 實(shí)驗(yàn)，試驗(yàn)
    We can learn by experiment that oil and water will not mix. 我們可以從實(shí)驗(yàn)中看到油和水是不相溶合的。
    Experiment vi. （常與on, with連用）做實(shí)驗(yàn)
    We experimented by putting oil and water together, and we saw that they did not mix. 我們把油和水放在一起做實(shí)驗(yàn)，結(jié)果看到它們不相溶合。
    They experimented with new reagents and succeeded. 他們用新試劑做了試驗(yàn),獲得了成功。
    expert adj. （常與at, in連用）內(nèi)行的
    At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk.在洛杉磯的特別游泳池里,孩子甚至在會(huì)走路之前就能熟練地在水下屏住呼吸。
    Rex soon became an expert at opening the gate. 雷克斯很快就成了開門能手。
    Kate's an expert in / at / on teaching small children. 凱特是個(gè)幼兒教育專家。
    All the young men are expert drivers.所有這些年輕人都是駕駛能手。
    Expert n. （常與at, in連用）專家
    an expert in cookery 烹調(diào)方面的專家
    a cookery expert 烹調(diào)專家
    external adj. 外部的；外面的
    the external walls of a house 一座房屋的外墻
    External causes become operative through internal causes. 外因通過內(nèi)因而起作用。
    This medicine is for external use only, not for drinking. 此藥只供外用,不可內(nèi)服。
    外國(guó)的；對(duì)外的
    external trade 國(guó)外貿(mào)易
    This local newspaper doesn't pay much attention to external affairs.這家地方報(bào)紙不太注重國(guó)外新聞。
    extract
    vt.
    拔出；拉出
    to extract a toot 拔牙
    提?。徽コ?；
    n.
    提煉物；精華
    lemon extract
    檸檬精