1 [U] the study of and knowledge about the physical world and natural laws （自然）科学: Modern science has discovered a lot about the origin of life. 现代科学发现了不少有关生命起源的知识。Fewer young people are studying science at university. 现在大学里修读理科的学生少了。 ☞Compare art. 与art比较。

2 [C] one of the subjects into which science can be divided 某一门科学；理科: Biology, chemistry and physics are all sciences. 生物、化学和物理都是理科。 ☞The study of people and society is called social science. 研究人和社会的学科叫做社会科学(social science)。