to step on / to tread / to stamp / to press a pedal / to pedal (a bike) / (online) to downvote
踩
=
⻊
+
采
:
The King of Chu (c) is playing his guitar in the airplane (ai3). Every time he looses his plectrum (采) he quickly steps (踩) on it with his left cowboy boot (⻊) to prevent it from rolling away.