Undertide
n. 潜流；暗流；底流；掩盖着的倾向
🗣️ 情景例句
Hello, I would like to speak to ..., please.
喂， 我想找一下……
I'm sorry to keep on coughing.
我不停地咳嗽，真是抱歉。
That's a good idea.
那真是好主意。