Когда учащиеся обучены тому, как правильно выполнять упражнения, они будут обладать более совершенной техникой и научатся наиболее эффективно использовать сопротивление воды.
When students are trained in how to perform the exercises correctly, they will have better technique and learn how to most effectively use water resistance.
When students are taught how to correctly perform the exercise, they will have more advanced technology, and learn the most efficient use of water resistance.
when students learn how to perform the exercises, they will have a more perfect technology and learn the most effective use of the resistance of the water.