Arc cosecant
反余割
🧩 词语组成解析
arc
[ɑ:k]
n. 综合症状;弧（度）;天穹;电弧，弧光。;
vi. 形成拱状物;循弧线行进;
abbr. American Red Cross. 美国红十字会;
n. 余割\\n[电] 余割
🗣️ 情景例句
He started out on a voyage around the world.
他开始周游世界。
You have to be there half an hour before departure time.
你要在起飞前半小时到那里。
We'll send a man right out to look at it.
我们马上会派个人去查看。