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- Any of a group of red dyes used as a biological stain, especially to detect the presence of RNA. 焦宁; 二苯氧芑胶染料用作生物染色剂的一组红色染料中的任一种，尤指用来探测核糖核酸的存在
- A reddish-brown crystalline compound, C16H12O6, used as an indicator and a biological stain. 氧化苏木精一种红褐色的晶体化合物，c16h12o6，用作指示剂及生物着色剂
- A reddish crystalline compound,C14H5O2(OH)3,that is isolated from madder root for use as a biological stain and commercial dye. 羟基茜草素，红紫素一种从茜草属植物中提取出来用作生物染色剂和商业染料的淡红晶状化合物C14H5O2(OH)
- A reddish crystalline compound, C14H5O2(OH)3, that is isolated from madder root for use as a biological stain and commercial dye. 羟基茜草素，红紫素一种从茜草属植物中提取出来用作生物染色剂和商业染料的淡红晶状化合物C14H5O2（oh）
- A red dye made of the dried and pulverized bodies of female cochineal insects. It is used as a biological stain and as an indicator in acid-base titrations. 胭脂红由雌胭脂虫虫体干燥并研成粉末制成的一种红色染料。用作生物着色剂和酸基滴定指示剂。
- A red dye made of the dried and pulverized bodies of female cochineal insects.It is used as a biological stain and as an indicator in acid-base titrations. 胭脂红由雌胭脂虫虫体干燥并研成粉末制成的一种红色染料。
- 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。
- Application of biological stain technique on detectary sentinel lymph node 生物染料技术在检测前哨淋巴结中的应用
- 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。
- Some biological molecules have the form of a helix. 有些生物分子呈螺旋状。
- 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。
- The school has a large biological laboratory. 这所学校有一个很大的生物实验室。
- 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。
