QL

例句：

1. 1. 质量
   quality
2. 2. 量子
   quantum
3. 3. 量子力学
   quantum mechanics
4. 1. The new product has a higher quality than the previous one.
   新产品的质量比之前的产品更高。
5. 2. The quantum theory explains the behavior of matter and energy.
   量子理论解释了物质和能量的行为。
6. 3. In quantum mechanics, particles can exist in multiple states simultaneously.
   在量子力学中，粒子可以同时存在于多个状态。