"大嘴巴" 在英语中可以翻译为 "big mouth"。这个短语来源于英语俚语，指的是一个人不能保守秘密，经常多嘴的人。
例句1:
He's a big mouth and I don't want to be friends with him anymore because he told everyone about my secret.
他是个大嘴巴，我不想再和他做朋友了，因为他告诉了所有人我的秘密。
例句2:
She's always a big mouth, never keeping her opinions to herself.
她总是个大嘴巴，从不保守自己的意见。