Circular function
圆函数, 三角函数
🧩 词语组成解析
🗣️ 情景例句
Keep smiling! things will calm down.
乐观一点，事情会平息下来的。
Whom will you vote for?
你将投票给谁？
Mrs. Zhu, I called to tell you that the conference has been delayed until the 15th and 16th.
朱夫人，我来告诉你会议已经推迟到了15号至16号开。