the first known nerve agent, synthesized by German chemists in 1936; a highly toxic combustible liquid that is soluble in organic solvents and is used as a nerve gas in chemical warfare
a rare silvery (usually trivalent) metallic element; brittle at low temperatures but liquid above room temperature; occurs in trace amounts in bauxite and zinc ores
G.A. Bradshaw's elephants on the Edge is a remarkable study of elephant-human interactions, whose opening premise is that "it is not so much that elephants are like us."
布拉德肖(G.A. Bradshaw)的《灭绝边缘的大象》(Elephants on the Edge)是一本研究人象共处极有价值的书,此书的基本假设是“不是大象有多么像我们。”