HSK 7-9
蹬
dēng动
to step on; to tread on; to put on; to wear (shoes, trousers etc); (slang) to dump (sb); Taiwan pr. dèng
他蹬着自行车快速上坡。
Tā dēng zhe zì xíng chē kuài sù shàng pō.
He pedaled his bicycle quickly uphill.
Say it
Hold the button, say it, then let go.
Also free:
Appears across levels (7-9) in the HSK 3.0 word list.