Toupper
小写字母转换成大小字母
🗣️ 情景例句
Please go over it and see if everything is in order.
请再过目一下，看看是否都符合规定。
Crazy!
神经病！
While they were talking it began to rain and Dimitri stayed in Aleko's house until the rain stopped.
就在他俩说话的时候，天下起了雨，迪米特里便呆在阿列科家里避雨，一直等到雨停为止。