A medieval chemical philosophy having as its asserted aims the transmutation of base metals into gold, the discovery of the panacea, and the preparation of the elixir of longevity.
炼金术, 炼丹术中世纪的一种化学哲学。其声称的目标是将一些基本金属转变为金子, 发现万灵药及制备长生不老药
Proper rest and enough sleep contribute to longevity.
适当的休息和足够的睡眠有益于长寿。
His longevity vexed his heirs.
他的长寿令他的继承人们不快
