Examples
nǐ你zhī dào知道zhè xiē这些gōng shì公式shì是cóng从nǎ lǐ哪里lái来de的ma吗？
你知道这些公式是从哪里来的吗？
Do you know where these equations come from?
此公式对所有实部大于零的复数z均成立。
This formula is valid for all complex numbers z with a real part greater than zero.
海龙公式说明了三角形的面积如何表示为其边长的函数。
Heron's Formula shows how the area of a triangle can be expressed as a function of its side lengths.