Unstable arc
[化] 不稳定电弧
🧩 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
Hail to the victors valiant,
向勇敢的胜利者致敬，
Can I fix an overseas call to London by person-to-person call?
我要打到伦敦的叫人电话好吗？
It was necessary to recognize that these institutions which are based on the same premises,
必须认识到，这些建立在相同前提基础上的风俗，