Dihydroxy tetrabasic acid
[化] 二羟四价酸; 二羟四碱价酸
🧩 词语组成解析
a. [化]四代的, 四元的, 四碱的
🗣️ 情景例句
They graduated from high school last year.
他们去年高中毕业。
We should keep them informed of what is going on here.
我们应该让他们知道这里发生的事情。[分词作定语]
He was just falling asleep when there was a loud knock at the door.
他刚要入睡，就有人很响地敲门。