Caseanic acid
[化] 酪烷酸\\n[医] 酪烷酸
🧩 词语组成解析
🗣️ 情景例句
Mrs. Stewart, may I have this dance?
Stewart太太，我可以请你跳这支舞吗？
0.It's better than nothing.
总比什么都没有好。
If they knew how difficult it was to drill through the hard rock, they would lose heart.
如果他们知道了钻透那坚硬的岩石有多么困难，他们会丧失信心的。