Arcsin
abbr. arcsine 反正弦
🗣️ 情景例句
He owes his wealth to diligence and good luck.
他的财富是由于他的勤劳和幸运。
Life without friend is death.
没有朋友的生活便等于死亡。
She can't come. She has to help her Mommy!
她不能来。她得帮她妈妈的忙！