hackneyed 陳腐的 mouldy, stale The old professor's hachneyed style of coaching arouses complaints from among students. caustic 腐蝕性的 abrasive, corrosive erosion 腐蝕 Erosion of the soil made the farmer's land less valuable. erode 腐蝕 蝕 corrode, wear away A constant stream of water eroded the rock mountain. stale 陳腐的 smelly, musty, flat The stale bread was dry and hard. rot 腐爛 perish, decay The body of the dead wolf began to rot. rotten 腐爛的 decaying, decomposed The rotten fruit smelled horrible. decay (使)腐敗 rot, decompose Sugar can cause tooth to decay. corrode 腐蝕 erode, eat away Battery acid corroded the inside of the camera. decomposition 分解 腐爛 rust 生銹 氧化 oxidize 鐵銹n An iron plow would get rusted under wet weather. If you leave your metal tools outside in the rain, they will rust. silica 硅土 limestone 石灰石 crystal 水晶 晶體 Salt crystals can be found in every home. gasoline 汽油 methane 甲烷 沼氣 hydrocarbon 碳?xì)浠衔?petroleum 石油 petroleum products 石油產(chǎn)品 成品油 plastic 塑料制品 塑膠 可塑體 intermediary 媒介物 居間者 mediator I always play intermediary when my sisters quarrel with each other. catalysis 催化作用 catalyst 催化劑 adhesive 粘合劑 膠粘 黏著性的 scorch 使退色 discolor Do not leave the iron on that delicate(精致的) fabric（織品） or the heat will scorch it. bleach 去色 漂白 blanch whiten 漂白劑 You can remove some stains from white shirts with a little bleach. tint 上色 染色vt 上色 色彩n tinge hue At dawn, the sky tints with green and pink. dye 顏料 染色v pigment I asked the hairdresser to dye my hair blond(金發(fā) 的). chemistry 化學(xué) biochemistry 生物化學(xué) hydronic 液體循環(huán)加熱（或冷卻）的 alchemy 煉金術(shù) 魔力 artificial 人造的 假的 非原產(chǎn)地的 ion 離子 molecule 分子 些微 solubility 溶度 溶性 可解決的 可解釋的 溶解性 solution 解答 解決辦法 溶解 溶液 solvent 溶解的 有償付能力的 有溶解力的 n溶媒 溶劑 dissolve 溶解 解散 Water dissolve salt as heat dissolve ice. element 元素 Water is made of the element: oxygen and hydrogen. impurity 雜質(zhì) blend 混合 combine, mix The room's decoration was a good blend of traditional and modern pieces. The artist blended painting with etching. compound 混合物 化合物