expression, noun, noun or participle which takes 'suru'
going up and down; rising and falling
Describes repeated fluctuation, such as prices, emotions, or physical movement. Often used with する to mean 'to fluctuate'.
株価が上がったり下がったりして、落ち着かない。
Stock prices keep going up and down, making me uneasy.
The temperature rises and falls, so it's easy to get sick.