Acerdol
[化] 高锰酸钙
🗣️ 情景例句
Well, it's eight twenty now.
现在是八点二十了。
Old bees yield no honey.
老蜂不酿蜜。
Even more processes are never patented at all but kept as secret processes.
更多的工艺过程根本就不会取得专利权，而是作为秘方保存着。