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. 煉金術(shù)，煉丹術(shù)中世紀的一種化學(xué)哲學(xué)。其聲稱的目標(biāo)是將一些基本金屬轉(zhuǎn)變?yōu)榻鹱樱l(fā)現(xiàn)萬靈藥及制備長生不老藥
His friends asserted that he was innocent. 他的朋友們斷言他是清白的。
She asserted her innocence/that she was innocent. 她堅稱自己很清白[她是無辜的]。