Betulonic acid
[机] 桦木酮酸
🧩 词语组成解析
🗣️ 情景例句
Lacks confidence and poise is nervous and ill at ease.
信心不足，不够自信，精神紧张，心神不定。
He likes playing the eletronic organ.
他喜欢弹电子琴。
That makes no difference.
没什么区别。