5 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