Acsin
反正弦函数
🗣️ 情景例句
No. I never could, either.
不会 ，我也一直都不会。
By the time we got there,the play had already begun.
等我们到那里，戏已经开始了。
Had it not been for the alarm clock she wouldn't have been late.
如果不是因为闹钟不响的话，她就不会迟到了。