Contarnic acid
[建] 可他酸
🧩 词语组成解析
🗣️ 情景例句
These files are highly confidential, please store them properly.
这些文件是高度机密的，请妥善保存。
Can you guess what I was doing this morning?
你能猜到今天上午我在做什么吗？
There is a boy in the water.
河里面有个男孩。