Dianionic surfactant
[化] 双阴离子表面活性剂
🧩 词语组成解析
[化] 表面活性剂\\n[医] 表面活性剂, 表面活化剂
🗣️ 情景例句
May I have your name and number, please?
请问你的姓名和电话号码？
That deep sigh could only express Helen's sadness.
那深深的叹息，不外乎表示出海伦的悲哀。
But of course, he can learn by himself. He has a book and a dictionary.
但当然，他也可以自学。他有书和词典。