1. The principle of invariance states that the laws of physics remain unchanged regardless of the coordinate system used.
不变性原理指出，无论使用何种坐标系，物理定律都保持不变。
2. Invariance is a crucial concept in mathematics that refers to properties or quantities that do not change under certain transformations.
不变性是数学中一个关键概念，指的是在某些变换下不发生改变的属性或量。