Gehring
[人名] 格林
🗣️ 情景例句
Hang in there. things will get better.
坚持住，情况会好起来。
You cannot make a silk purse out of a sow's ear.
猪耳朵做不成丝钱包；巧妇难为无米之炊。
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。