镁粉袋挂于腰后双手可随时沾取使用粉袋的好处很多如岩板上沾粉的动作其实就是一种放松与休息
The magnesium powder bag can be hung behind the waist, allowing both hands to take it at any time. There are many benefits to using the powder bag. For instance, the action of taking powder on a rock plate is actually a form of relaxation and rest
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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