在白色背景下，一名意志坚定的年轻黑人在训练中紧紧抓住静止的自行车 A determined young black firmly grip the stationary bike on his training session over a white backdrop

在强化训练过程中，一名身穿黑色运动服、意志坚定的年轻黑人男子紧紧抓住固定自行车的把手，不停地蹬着自行车。

In the midst of his intensive training session, a determined young black man wearing black sportswear firmly grips the handles of the stationary bike while continuously pedaling.