crude heavy solvent

例句：

1. 1. The crudeheavy solvent is used to extract impurities from the oil.
   粗重溶剂用于从油中提取杂质。
2. 2. Crude heavy solvent is a common solvent used in chemical reactions.
   粗重溶剂是一种常见的化学反应溶剂。
3. 3.The crude heavy solvent was found to be effective in removing contaminants from the oil.
   发现粗重溶剂能有效去除油中的污染物。