Betulonic acid
[机] 桦木酮酸
🧩 词语组成解析
🗣️ 情景例句
Richard, isn't that too much to ask of your mother?
Richard，那是不是太麻烦你母亲啦？
The voice is the best music.
说话声是最好的音乐。
We're having trouble meeting your shipping schedule.
要如期出货，我们有问题。