Put the stone into bavin room. It is two hundred and fifty yuan.

把石磨抬到柴房里去吧，两百五十元钱呢！

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It is to popularize firedamp pool actively, change bavin burning a red-letter day, protect silvan natural resources.

二是积极普及沼气池，改燃节柴，保护森林资源。

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