In algebra, the equality of two quantities is expressed by an equation.
在代数中,两个量的相等性通过方程来表达。
Art is not a mirror to reflect reality, but a hammer with which to shape it.
The soul is placed in the body like a rough diamond, and must be polished, or the luster of it will never appear.
主要的义务规则是那些要求或禁止某些行为的规则。