一位年轻的女运动员在自行车上刻苦训练 A young athlete woman training hard on the stationary bike

一位年轻、专注的女运动员在极简主义的黑色背景下，在静止的自行车上奋力训练，挑战极限。

A young, dedicated athlete woman pushing her limits and training hard on the stationary bike, against a minimalist black background.