Arccosecant
un. 反余割
🗣️ 情景例句
I've got some great new dance music.
我有几卷很好的新舞曲。
I'm on my way.
我这就上路。
Just then, the gaoler appeared with the precious letter in his bands.
这时狱卒上场，手里拿着那封珍贵的信。