A heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures. 银色有毒金属元素,重,单价或二价,唯一一种在常温下呈液态的金属。
A soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals. 一种银白色软质单价元素,碱金属属,已知最轻的金属,存在于许多矿物中。