D-usninic acid
[化] 右旋地衣酸
🧩 词语组成解析
🗣️ 情景例句
but I enjoy taking pictures, and I want to continue doing that.
但我喜欢拍照片 而且我要继续做这一行。
I want you to work for yourself, and for the well-being fo the society.
我认为你们应为自己工作，为这个社会的幸福而工作。
There are four of us.
我们有4人。