数学公式要背熟。
Math formulas must be memorized.
公式
formula
noun HSK 3.0 · Band 7
Watch it being written
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
公
式
Nice writing!
Build with these blocks
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
公
See it in sentences
他套用了这个公式。
He applied this formula.