Swimming in the grasp of the human skills, began with a simple diving activities.

人类在掌握了游泳技能之后，就开始有了简单的跳水活动。

youdao

Swimming in the grasp of the human skills, began with a simple diving activities.

人类在掌握了游泳技能之后，就开始有了简单的跳水活动。

youdao