Arcing back
[电] 回弧
🧩 词语组成解析
[机] 电弧作用
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
It is too expensive. How about half the price?
太贵了，半价怎么样？
They that do nothing learn to do ill.
游手好闲，容易学坏。
It's very kind of you to help me.
你帮助我真是太好了。