Ulmic acid
[化] 赤榆酸\\n[医] 榆酸
🧩 词语组成解析
棕腐质的
🗣️ 情景例句
But first things first.
但事有先后。
A merry heart goes all the way.
生性乐天，终身受用。
At the far end of the lake, they came to huge piles of rubble which had been washed up by the water.
在湖的尽头，他们见到一大堆一大堆由湖水冲刷上岸的碎石。