Arc back
[机] 逆弧
🧩 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;
back
[bæk]
n. 背，背部;背面，反面;后面，后部;（椅子等的）靠背;
vt. 使后退;支持;加背书于;下赌注于;
vi. 后退;倒退;
adj. 背部的;后面的;以前的;拖欠的;
adv. 以前;向后地;
🗣️ 情景例句
All right. That's it for today.
行了。今天就做这些。
When you're learning to drive, having a good teacher makes all the difference.
初学驾驶有好的教师指导，差别很大。
Their humbler followers, such as partridges, have a like power of strong propulsion, but soon tire.
次于野鸭和鸽子的鸟，如鹧鸪，有相似的巨大推动力，但很快会疲劳。