... oil wet grain 亲油颗粒 oil wet sand 油湿砂岩 oil wet surface 油湿表面 ...
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Use a scraper to remove the loose paint coating from the wall first and clear the dust, dirt, sand, oil and mold with a wet rag completely.
请将准备要处理的墙面进行清洁，用刮刀刮除松脱漆膜并以湿抹布清除粉尘，特别是污垢、灰尘、砂土、油渍或发霉等处皆请先彻底清理。
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