Ethacetic acid
[化] 丁酸; 正丁酸
🧩 词语组成解析
🗣️ 情景例句
Dad works hard, and he works late.
爸爸工作忙， 而且忙到很晚。
I often study in the morning.
我常常在早上读书。
then administrative overheads will be low.
行政管理费用就会降低。