Spherical trigonometry
n. 球面三角学
🧩 词语组成解析
n. 三角学
🗣️ 情景例句
Good day also to you.
再见！
I appreciate your efforts and cooperation and hope that this will be the forerunner of other transactions in future.
非常感谢贵方的努力与合作，希望这只是我们今后业务往来的开端。
Is there something wrong.
出了什么事吗。