Ulmic acid
[化] 赤榆酸\\n[医] 榆酸
🧩 词语组成解析
棕腐质的
🗣️ 情景例句
There are thirty-three thousand three hundred and thirty-three feathers on that bird's throat.
那只画眉鸟的喉咙上有三万三千三百三十片羽毛。
To speed-read
速读
Oh, good evening, Lucy. Come in. Nice to see you!
噢，晚上好，露茜。请进。见到你真高兴！