他的情绪有波动。
His mood has some ups and downs.
to undulate; to fluctuate; wave motion
Every character draws itself, stroke by stroke. Then grab the brush: trace it yourself and hear the word when you finish.
Nice writing!
Chinese words snap together like bricks. Every word below shares a character with this one, so you are already halfway to knowing it.
他的情绪有波动。
His mood has some ups and downs.
价格波动很大。
Prices fluctuate a lot.