Toupper
小写字母转换成大小字母
🗣️ 情景例句
But we found nearly half on them were mouldy. We can't accept them anyway.
但是我们发现差不多一半发了霉。无论如何我们不能接受。
His career opportunities suddenly looked brighter.
他似乎突然又有希望飞黄腾达了。
I'm very much interested in your personal computers.
我对你们的个人电脑深感兴趣。