Arcsine
反正弦
🗣️ 情景例句
Here's your cinnamon, Pop.
这是你要的肉桂， 爸爸。
Stamp-collecting is a popular hobby.
集邮是一种普遍的业余爱好。
and often are foolish enough to let the adolescents see that they are annoyed.
而且愚蠢地让孩子看出自己的烦恼。