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
When are they coming?
他们什么时候来？
Rumor says I won't get any insurance.
根据传闻，我无法领到保险金了。
The lawyer ascertained that a policeman had indeed dealt roughly with foreigners on several occasions.
律师证实有个警察确实多次粗鲁地对待外国人。