Islower
判断是否小写字母
🗣️ 情景例句
I just can't seem to win tonight.
我今晚看起来是不能赢了。
My money is all gone!
我一文不名了！
Most of our fears are unreasonable, but they are impossible to erase.
我们的恐惧大部分是没有道理的，但去无法消除。