precarious
precarious/priˈkɛəriəs/adj.不稳定的：a precarious ladder一个不牢靠的梯子She made a precarious living by writing.她靠写作过着饔飧不继的日子。A soldier leads a very precarious li···
precaution
precaution/priˈkɔ:ʃən/n.1.［u］预防，防备，警惕: by way of precaution为了小心/预防2.［c］预防措施:take precautions against/at…对…采取预防措施：［考句］It was the first time t···
precede/preceding/precedent
precede/priˈsi:d/vt.(顺序、位置、时间上)在…之前，先于(［反］follow)：the calm that preceded the storm暴风雨前的平静；in the preceding paragraph/the paragraph that precedes在前一段···
precious
precious/ˈpreʃəs/adj.宝贵的，珍贵的，贵重的：precious metals贵金属；precious stones宝石，钻石；precious words珍贵的话；one’s most precious possession某人最喜爱的东西
precipitate
precipitate/priˈsipiteit/ I.vt.使突然/迅速发生：Illness precipitated her death.疾病加快她的死亡。Falling sales precipitated the failure of the company.销售额下降促使该公司倒闭。‖···
precise/precision
precise/priˈsais/adj.精确的，准确的: the precise meaning of a word一个词的确切意义；very precise calculations十分精确的计算Our train leaves at about half past ten, or, to be preci···
preclude/preclude
preclude/priˈklu:d/vt.阻止，排除，妨碍：preclude all doubts (misunderstanding)消除一切疑虑(误解) A prior engagement will preclude me from coming.我因有约在先，不能来了。preclude/p···
predatory
predatory/ˈpredətəri/ adj.食肉的：predatory birds猛禽类；predatory animal食肉动物；a predatory war掠夺性战争
predecessor
predecessor/ˈpri:disesə/n.［c］1.前任，前辈：Our new doctor is much younger than his predecessor.我们的新医生比前任那位年轻多了。［考句］His use of color, light and form quickly ···
predict/prediction
predict/priˈdikt/vt.预言；预告；预示（跟名词/代词、从句和不定式）It’s still not possible to accurately predict the occurrence of earthquakes.现在还不能够精确地预报地震。Who could···
