Arc secant

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;

secant

a. 正割的\\nn. 割线, 正割

so the old one will be ready

这个旧的又可准备

He is explaining the details of his idea.

他在详细说明这个构想。

On the subject of reading, Francis Bacon, who lived at about the same time as shakespeare, wrote these words, Some books are to be tasted, others to be swallowed, and some few to be chewed and digested. This good advice shows how it is possible to read

“有些书是应当尝尝滋味的，有些书是应当吞食下去的，有少数书是应当咀嚼和消化的。”这个忠告很好，它表明可以用不同的方法来阅读不同类型的书。