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
It's been great talking to you.
和你谈得真高兴。
It'll soon go out of mind.
这件事很快会被忘记。
Built in 1885, it was the oldest car taking part.
该车造于1885年，是参赛车中最老的一辆。