这一点在气缸选用时要特别注意。
刚开始使用时可能需要一点实践，找到合适的角度和正确的位置。
It may take a little practice at first as you need to find the Angle and position that is right for you.
刚开始使用时可能需要一点实践，找到合适的角度和正确的位置。
It may take a little practice at first as you need to find the Angle and position that is right for you.
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