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
I heard that some tours actually go down into the canyon. Is that true?
我听说有的旅游团真正下到峡谷里去了。那是真的吗？
What time is the mail delivered on Saturday?
邮件在星期六什么时间被递送？
Have your mechanics finished yet?
你们的机械师修好了吗？