Whiffletree
n. 马车前端的横木
✅ 同义词
🗣️ 情景例句
Really? What part?
真的？ 什么地方？
Yes, we have been interested in new system.
是的，我们对新系统很感兴趣。
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。