chemical form化学形态chemicaladj.化学的n.药品；化学物chemical/product tanker化学品及成品油船chemicalisotope separation化学法同位素分离(法)Chemical Analysis Facility化学分析设施chemical mutagens disposal化学诱变剂清除chemical additives in food食品中的化学添加剂Chemical Operations System化学作战系统chemical industry vocation化工职业chemical reduction process液相还原法Chemical composite plating化学复合镀Chemical Weapons Agreement化学武器条约协定

1. No wonder I mistook it as a tree fossil.
   怪不得我以为它是古树的化石呢。
2. A shiny fossil "stone" called amber is in a beautiful box.
   一种名为琥珀的光彩夺目的化石在一个漂亮的盒子里。