"Don't hang up, please wait"
Source: This is a common phrase used in Engpsh-speaking countries when someone is making a phone call and the other person is about to hang up the phone.
Example in Engpsh: "Hello, can you hear me? Don't hang up, please wait."
中文翻译: "嗨，你听得到我吗？别挂断，请稍等。"