The dolphin kick and body undulation exercises simply teach you how to learn the technique described above.
海豚式打腿练习和身体的波动只是教你怎么学技术前述。
Through guidance teaching of the backsliding technique and by making good use of people's visual sense, correct sense of time, space and correct action position can be set up through exercises.
通过对背向滑步技术进行导引教学，利用人的视觉感应，通过练习，建立起正确的时间感、空间感，以及正确的动作定位。
Tremolo is no great technique, it's just an effect that every other guy with some discipline and knowledge towards his exercises can get.
颤音不是什么了不起的技巧，它仅仅一种每个人都可以根据一些规则和知识练习并掌握的弹奏效果。
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