Acoelous
a. [动]无体腔的
🗣️ 情景例句
Then make a left turn.
然后向左转〃
Can you guess what I was doing this morning?
你能猜测我今早正在做什么吗？
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。