Perimeter arc
[医] 视野计弧
🧩 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
And my grandfather.
还有我祖父。
Childhood shows the man, as morning shows the day.
看人看年少，看天看破晓。
When a passing tanker rescued them five days later,
5天后，一条油轮从那儿路过，搭救了他们。