Callsign
n. 通信呼号
🗣️ 情景例句
What impressed you the most about Shanghai?
你对上海最深的印象是什么？
He is rich enough who owes nothing.
无债就是富。
runs the gentle slope of the continental shelf, geologically part of the continents.
从地质学上来说，它是大陆的一部分。