physics
/ˈfɪzɪks; `fɪzɪks/ n[sing v]
(scientific study of the) properties of matter and energy (eg heat, light, sound, magnetism, gravity) and the relationship between them 物理（学）
Physics has made enormous progress in this century. 本世纪物理学的发展突飞猛进.
nuclear physics 原子核物理学
the laws of physics 物理学定律
[attrib 作定语]
a physics textbook 物理学教科书
the physics of the electron 电子物理学.