the sport of riding strong bicycles across rough countryside or on special tracks, racing them or performing stunts (= skilful and exciting actions). BMX stands for "bicycle motocross".

He campaigned for years for BMX to be included in the Olympics. 他开展了数年的支持自行车越野入奥运会的运动。

She is one of BMX's biggest stars. 她是自行车越野的几大巨星之一。

a BMX rider/biker/racer 小轮车骑手/自行车手/赛车手

a strong bicycle designed for the sport of BMX

He used to ride around on his BMX. 他以前常常骑着他的小轮车溜达。

Jen really wants a BMX bike to do her own stunts. 简真的想要一辆小轮车来做她自己的特技。