Thickleaf
n. 青锁龙属植物
🗣️ 情景例句
thank you very much.
十分感激你。
It takes courage to do so.
这样做需要勇气。
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。