Arcsin
abbr. arcsine 反正弦
??? 情景例句
Well, maybe your dad and I could take you fishing with us.
嗯， 也許你爸爸和我可以帶你去釣魚。
There are 16 participants here today.
今天有16位參會者。
If he had not broken his tooth, he would not be in hospital now.
如果他沒有把牙齒弄壞，現在就不在醫院了。