Ulmic acid
[化] 赤榆酸\\n[医] 榆酸
🧩 词语组成解析
棕腐质的
🗣️ 情景例句
The water's pretty deep here.
这里水相当深。
No. It's out of the question.
哪儿的话，根本谈不上赔。
He was rather elderly with grey hair and clear blue eyes.
他上了年纪，有着灰白的头发和明亮的蓝眼睛。