P-n-butylphenylarsonic acid
[化] 对丁苯胂酸; 对正丁苯胂酸
🧩 词语组成解析
🗣️ 情景例句
Rock-a-bye, baby, on the tree top,
摇呀摇， 小宝宝， 在树梢，
What is he doing?
他做什么事？
He agreed that a train did come into the station at the time on the paper and that it did stop, but only to take on mail, not passengers.
搬运工说，正如纸条所说，确有一趟火车在那个时刻到站，但它只停站装邮件，不载旅客。