My tireless little cilia make about ten sweeping strokes a second.我那不怕疲劳的小纤毛每秒钟约做10次清扫动作.You should learn to use short and quick strokes with little backswing.你应该学会用小的引拍动作,用短促的爆发力击球.Any sailor who disobeys will be punish...
n.中风，a sudden loss of consciousness resulting when the rupture or occlusion of a blood vessel leads to oxygen lack in the brain.，（游泳或划船的）划( stroke的名词复数 )，中风，（打、击等的）一下，（成功的）举动...