Dihydroxymaleic acid
[化] 二羟基顺丁烯二酸; 二羟马来酸
🧩 词语组成解析
🗣️ 情景例句
How much does a return ticket cost?
返程票多少钱？
He's on the phone.
他在打电话。
While on a walking tour with his wife,
一次，他与妻子徒步旅行。