Arcsec
abbr. arcsecant 反正割
🗣️ 情景例句
My company manufactures toys and games for children.
我们公司专为孩子们生产玩具和游戏器具。
Troubles never come singly.
祸不单行。
The woman immediately behind the two cars happened to be a learner.
紧跟其后的一辆车上的司机碰巧是个初学者，