不请吃就捣蛋（指万圣节孩子们挨家逐户要糖果等礼物，如不遂愿便恶作剧一番的风俗）...

simplicities的音标：...

furbenicillin的音标：furbenicillin的英式发音音标为：[fɜ:benɪ'sɪlɪn]furbenicillin的美式发音音标为：[fɜbenɪ'sɪlɪn]...

v.使干燥( exsiccate的过去式和过去分词 )...

Many PAHs are carcinogenic or are suspected to be carcinogenic.其主要来源于煤的不完全燃烧,也有相当部分来源于汽车尾气的排放.The both carcinogenic factors were investigated on its dose - response ralationships.研究上述两种致癌因子的剂量 - 效应相关模式.Some industrial ch...

adj.以铁酸盐为主要成分的...

n.放弃权力者，退位者...

Promote materialist dialectics and oppose metaphysics and scholasticism.要提倡唯物辩证法,反对形而上学和烦琐哲学.Its doubting and challenging, its quibbling and dialectics, often are irritating to common people.它的疑惑和诘难, 它的诡辨和辩证, 常常是令人讨厌的.In...