String players practice moving the fingers of the left hand up and down, while drawing the bow to and fro with the right arm-two entirely different movements.

弦乐器的演奏者练习的则是在左手的手指上下滑动的同时，用右手前后拉动琴弓——两个截然不同的动作。

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String players practice moving the fingers of the left hand up and down, while drawing the bow to and fro with the right arm — two entirely different movements.

弦乐器的演奏者练习的则是在左手的手指上下滑动的同时，用右手前后拉动琴弓——两个截然不同的动作。

youdao