Headwaters
n. 源头, 上游
✅ 同义词
🗣️ 情景例句
Hello, ... speaking. Who do you wish to speak to?
喂， 我是……你想找谁？
There is no fire without smoke.
无火没有烟。
I don't mind. Either time is OK.
我不介意什么时候。都行。