Circulated
a. 流通的
🗣️ 情景例句
Well, good night.
好吧， 晚安。
A duck will not always dabble in the same gutter.
一只鸭子不会常在同一条沟中玩水。
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。