7 sentences

1. 你对量子力学了解多少？

   nǐ duì liàng​zǐ lì​xué liǎo​jiě duō​shao?

   How much do you know about quantum mechanics?

   Source: OpenSubtitles

2. 他在大学期间选修了量子力学。

   tā zài dà​xué qī​jiān xuǎn​xiū le liàng​zǐ lì​xué.

   He took quantum mechanics as an elective during university.

   Source: Dong Chinese Dictionary

3. 量子力学是研究微观粒子的重要学科。

   liàng​zǐ lì​xué shì yán​jiū wēi​guān lì​zi de zhòng​yào xué​kē.

   Quantum mechanics is an important discipline for studying microscopic particles.

   Source: Dong Chinese Dictionary

4. 量子力学是物理学中的一个重要分支。

   liàng​zǐ lì​xué shì wù​lǐ​xué zhōng de yī gè zhòng​yào fēn​zhī.

   Quantum mechanics is an important branch of physics.

   Source: Dong Chinese Dictionary

5. 量子力学主要研究微观世界的物理现象。

   liàng​zǐ lì​xué zhǔ​yào yán​jiū wēi​guān shì​jiè de wù​lǐ xiàn​xiàng.

   Quantum mechanics mainly studies physical phenomena in the microscopic world.

   Source: Dong Chinese Dictionary

6. 在物理课上，同学们正在认真地讨论牛顿的力学定律。

   zài wù​lǐ kè shàng, tóng​xué men zhèng​zài rèn​zhēn de tǎo​lùn Niú​dùn de lì​xué dìng​lǜ.

   In physics class, the students are earnestly discussing Newton's laws of mechanics.

   Source: Dong Chinese Dictionary

7. 他大学时主修力学，毕业后成为了一名建筑工程师。

   tā dà​xué shí zhǔ​xiū lì​xué, bì​yè hòu chéng​wéi le yī míng jiàn​zhù gōng​chéng​shī.

   He majored in mechanics in college and became a structural engineer after graduation.

   Source: Dong Chinese Dictionary