Circular arc
[机] 圆弧
🧩 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
How is everyone in your family?
全家都好吗？
It is lost labour to sow where there is no soil.
没有土壤，播种也是徒劳。
an illness which at twelve would knock us over,
使我们在12岁时病倒的疾病，