Inpadoc
世界专利数据库
🗣️ 情景例句
Is smoking allowed on the train?
火车上允许吸烟吗？
You'll hurt yourself, if you don't take care.
你不专心的话，就会伤到你自己。
All that is in my mind when I meet a young person.
每逢我遇到年轻人，脑子里就想到，