Ucc
[计] 万国版权公约, 通用分类系统
🗣️ 情景例句
I don't know for sure.
我不太清楚。
It seems doesn't understand.
看起来他好像不了解。
international standards of water treatment are usually followed at bottling plants.
装瓶厂通常遵循国际水处理的标准。