Pull buoy
01
拉浮标, pull buoy
a flotation device used in swimming to increase buoyancy and isolate the upper body
例子
Swimmers often use a pull buoy to focus on improving their arm stroke technique.
游泳运动员经常使用拉力浮标来专注于提高他们的手臂划水技术。
拉浮标, pull buoy