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- Biological Stain Commission 生物沾染委员会
- 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。
- Some wartime vessels are still in commission. 有些战时的军舰仍在服役。
- 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。
- He sells motorcars on commission. 他以抽取佣金的方式销售汽车。
- 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 get flu and am out of commission for a week. 我得了流感，一星期没工作。
- Can you sell for us on a commission basis? 你能拿佣金替我们销售吗？
- 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。
- He reps for two firm on commission. 他是收两家公司佣金的销售代表。
- You get (a) 10% commission on everything you sell. 你可从售出的每种货物中得到10%25佣金。
- I rubbed hard but the stain just wouldn't go. 我使劲擦也擦不掉那污迹。
