化学huàxué 1.研究物质的组成、结构、性质和变化规律的科学,是自然科学中的基础学科之一。{chemistry; one of the basic natural sciences, which deals with the composition, structure, properties and rules of change of substances} 2.赛璐珞的俗称{popular name for 赛璐珞sàilùluò}: 这把梳子是~的。{This comb is made of celluloid.}