Arc of rotation
[机] 转动弧
🧩 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];
🗣️ 情景例句
Alexandra's a high-school exchange student from Greece.
Alexandra是从希腊来的交换高中生。
I'll check into it and get back to you.
我查对一下然后送还给你。
'Would you mind unlocking this suitcase please?'
“请打开这只手提箱好吗？”