Contarnic acid
[建] 可他酸
🧩 词语组成解析
🗣️ 情景例句
That's not it.
不是这种事。
It is too late to shut the stalbe door when the steed is stolen.
失马锁厩，为时已晚；贼去关门，为时已迟。
Thanks for your letter.
谢谢你给我来信。