Arc cosecant
反余割
?? 詞語(yǔ)組成解析
arc
[ɑ:k]
n. 綜合癥狀;弧（度）;天穹;電弧，弧光。;
vi. 形成拱狀物;循弧線(xiàn)行進(jìn);
abbr. American Red Cross. 美國(guó)紅十字會(huì);
n. 余割\\n[電] 余割
??? 情景例句
With great tact, Lily said that it was time for her to go.
莉莉機(jī)智地說(shuō)她該走了。
My tooth hurts like hell.
我牙疼得要命。
Don't you dare come back again!
你敢再回來(lái)！