D-camphorsulfonic acid
[建] 右旋梓脑磺酸
🧩 词语组成解析
🗣️ 情景例句
In fact, I'd like your autograph.
事实上 我想要你的签名。
I didn't know whether to send the letter airmail or not.
我不知道是否送航空邮件。
We are so familiar with the fact that man ages,
我们对人总是要衰老的现象并不陌生，