Back arc
[电] 回弧
🧩 词语组成解析
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;
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
That politician was involved in too many sex scandals when he was in power.
那个政客在任期间牵涉进太多的性丑闻之中。
Please go over it and see if everything is in order.
请过目一下，看看是否一切妥当。
For one thing they keep the water clean.
一来，水下植物可以保持水的清洁。