Quantum mechanics is famous for saying that a tree falling in a forest when there's no one there doesn't make a sound.

量子力学有一句名言：在没有人的时候，树在森林中倒下是不会发出声音的。

youdao

It encompasses the study of the universe from the largest galaxies to subatomic particles, covering mechanics, radiation, heat, electricity, sound, magnetism and the structure of atoms.

它涵盖对宇宙从最大的星系到亚原子粒子整个空间范围的研究，覆盖力学、辐射、热、电、声、磁和原子结构等等。

youdao

This included the five subjects of engineering drawing, mathematics, applied mechanics, principles of electricity, heat light and sound.

这种考试内容包括工程制图、数学、应用力学、电学原理以及声光热等五门课程。

youdao

In particle physics, sound-bite explanations are much harder: wave-particle duality, quantum mechanics, general relativity and string theory make good mathematical sense, or so I am told, but they generally defy translation into English.

WSJ: Matt Ridley on the Higgs Boson | Mind & Matter