在白色背景下，一位意志坚定的年轻黑人在训练中牢牢地抓着固定自行车 A determined young black firmly grip the stationary bike on his training session over a white backdrop

在他密集的训练中，一个穿着黑色运动服的坚定的年轻黑人男子紧紧抓住固定自行车的把手，同时不停地踩踏板。

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.