节目采用张红岩编著的《词以类记—TOEFL iBT词汇》，只听写英文单词，听完一个单词回车另起一行听写下一个单词，句子和中文不用听写。 Hints：本期42个单词
hackneyed caustic erosion erode stale rot rotten decay corrode decomposition rust silica limestone crystal gasoline methane hydrocarbon petroleum plastic intermediary catalysis catalyst adhesive scorch bleach tint dye chemistry biochemistry hydronic alchemy artificial ion molecule solubility solution solvent dissolve element impurity blend compound
hackneyed 陈腐的 mouldy, stale The old professor's hachneyed style of coaching arouses complaints from among students. caustic 腐蚀性的 abrasive, corrosive erosion 腐蚀 Erosion of the soil made the farmer's land less valuable. erode 腐蚀 蚀 corrode, wear away A constant stream of water eroded the rock mountain. stale 陈腐的 smelly, musty, flat The stale bread was dry and hard. rot 腐烂 perish, decay The body of the dead wolf began to rot. rotten 腐烂的 decaying, decomposed The rotten fruit smelled horrible. decay (使)腐败 rot, decompose Sugar can cause tooth to decay. corrode 腐蚀 erode, eat away Battery acid corroded the inside of the camera. decomposition 分解 腐烂 rust 生锈 氧化 oxidize 铁锈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 晶体 Salt crystals can be found in every home. gasoline 汽油 methane 甲烷 沼气 hydrocarbon 碳氢化合物 petroleum 石油 petroleum products 石油产品 成品油 plastic 塑料制品 塑胶 可塑体 intermediary 媒介物 居间者 mediator I always play intermediary when my sisters quarrel with each other. catalysis 催化作用 catalyst 催化剂 adhesive 粘合剂 胶粘 黏着性的 scorch 使退色 discolor Do not leave the iron on that delicate(精致的) fabric（织品） or the heat will scorch it. bleach 去色 漂白 blanch whiten 漂白剂 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 颜料 染色v pigment I asked the hairdresser to dye my hair blond(金发 的). chemistry 化学 biochemistry 生物化学 hydronic 液体循环加热（或冷却）的 alchemy 炼金术 魔力 artificial 人造的 假的 非原产地的 ion 离子 molecule 分子 些微 solubility 溶度 溶性 可解决的 可解释的 溶解性 solution 解答 解决办法 溶解 溶液 solvent 溶解的 有偿付能力的 有溶解力的 n溶媒 溶剂 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 杂质 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