Freeloader
n. 不速之客, 揩油的人
✅ 同义词
🗣️ 情景例句
Those are you just need.
那正是你们所需要的。
If he doesn't pay, who will?
如果他不，谁要付账？
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。