When I swim fast breast stroke, I try to picture that I can almost dig into a cross position with body flat on the water and my arms are a 180 degree.是什么意思_When I swim fast breast stroke, I try to picture that I can almost dig into a cross position with body flat on the water and my arms are a 180 degree.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句