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- He vainly tried to mark the defacing stain out. 他试图除去有损外观的污迹，但没有成功。
- I put the shirt in soapy water to soak out the stain. 我将衬衫浸在肥皂水里以去除污渍。
- I scrubbed hard at the stain to see if I could get it off. 我使劲擦这个污迹，看能不能将它去掉。
- I am afraid you must wash out this stain. 恐怕你必须洗掉这个污渍。
- The stain on his shirt is difficult to clean off. 他衬衣上的污点很难去除掉。
- This kind of soil contains much alkali. 这种土壤含碱丰富。
- I rubbed hard but the stain just wouldn't go. 我使劲擦也擦不掉那污迹。
- Such a man is a stain to humanity. 这种人是人类的耻辱。
- There's an ink stain on your shirt. 你的衬衫上有一个墨水斑。
- He left the court without a stain on his character. 他经法庭一役，人格丝毫无损。
- He's got an ink stain on his shirt. 他衬衫上有块墨渍。
- The ink made an indelible stain. 墨水留下一个洗不掉的污渍。
- How much stain should I buy for the table? 给这张桌子上色，我得买多少颜料？
- alkali stain 碱性着色剂
- These carpets won't stain easily. 这些地毯不易弄脏。
- Cold water should take that stain out of your skirt. 用凉水可洗去你裙子上的污迹。
- Cyclization occurs readily with dilute alkali. 遇到稀碱就容易环化。
- The acid and alkali are combined into salt. 酸与碱化合成盐。
- The book is worn out and has ink stain on its cover. 这本书破旧了，封面上有墨渍。
- Of, relating to, or containing an alkali. 碱的与碱有关的或含碱的
