Phthienoic acid
[化] 结核菌烯酸
🧩 词语组成解析
🗣️ 情景例句
Are you having a good time, Susan?
玩得高兴吗， Susan？
The mountains have brought forth a mouse.
大山生小鼠（指：费力大而收效小）。
No! You don't understand! Not before or after meals--instead of them.
“不是，你没听懂！不是饭前或饭后吃--而是代替三餐饭。”