Sec.-butylacetic acid
[建] 零丁基醋酸, 另己酸
🧩 词语组成解析
🗣️ 情景例句
Am I older than you? You look so young.
我比你老吗？你看起来非常年轻？
Every bean has its black.
人人有其缺点。
Just let me know which day.
决定好哪一天就告诉我。