你是one arm 20 or two arms 20? Not bad for 20 with two arms

来源: 于 2025-01-08 11:03:02 [旧帖] [给我悄悄话] 本文已被阅读：次

我们有时做一个drill 叫 - Stroke and Time, 游 50yard 的时间和 total stroke 相同。for example, swiming for 50 yard uses 50 seconds and 50 strokes(counting both arms)