Arc length
[计] 弧长
🧩 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;
🗣️ 情景例句
are important for the sales of your book.
对于你这本书的销售很重要。
It was eleven o'clock when he finally showed up.
他最后露面时，已经11点钟了。
Modern readers would find such naive solution totally unacceptable.
现代读者会觉得这种天真的结局完全无法接受。