double overarm back-stroke的意思|示意
美 / /
英 / /
双臂过臂仰泳
double overarm back-stroke的网络常见释义
双臂仰泳 ... 两臂交替划水：alternate arm [hand-over-hand] stroke 双臂仰泳：double overarm back-stroke 手臂交叉动作：scything arm action ...