Just a moment. 稍等下哈~；Just a second. 等一下哈~
    例：Could you please do me a favor? -Just a moment/second
    Give me a second/moment. 能不能给我一首歌的时间？
    例：Could you help me clean room 102, please？-Give me a second, please.请帮我打扫一下102房间。-麻烦您稍等片刻。
    Hold on/Hang on. 别挂电话。
    wait a moment 常用来自言自语
    例：Hey, wait a moment, isn’t that my car？慢着，那不是我的车吗？