Arc of action
[机] 作用弧
🧩 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;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
action
['ækʃən]
n. 行动，活动;功能，作用;手段;[法]诉讼;
🗣️ 情景例句
Ask him to join us for lunch.
请他来和我们一起吃午饭。
One has lived too near a wood to be frightened by owls.
深知底蕴，不以为怪。
The growth of alternative mental interests is a long process.
精神上多种情趣的培养是一个长期的过程。