2.a soft gray malleable metallic element that resembles tin but discolors on exposure to air;it is highly toxic and is used in rodent and insect poisons;occurs in zinc blende and some iron ores.
英
美
- 一种软且可延展的灰色金属元素,类似锡,但暴露于空气中会退色,有剧毒,用于制啮齿动物和昆虫毒药,见于闪锌矿和一些铁矿石中。