Ethacetic acid
[化] 丁酸; 正丁酸
🧩 词语组成解析
🗣️ 情景例句
Tomorrow morning it is.
确定是明天早晨。
Excuse me to have troubled you.
对不起麻烦你。
But we won't have our big family get-together until Christmas.
但我们要等到圣诞节才会有家庭大团圆。