Back running
[化] 封底焊
🧩 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;
running
['rʌnɪŋ]
n. 跑步;运转;流出;
adj. 跑着的;流动的;连续的;操作中的，运转着的;
v. 跑;运转(run的ing形式);
🗣️ 情景例句
Mom, you're winning!
妈妈， 你赢了！
Missing school to watch the football match is out of the question.
为看足球赛而旷课，那可不行。
When one seriously studies the social orders that have had the opportunity to develop autonomously,
当一个人认真地研究自发形成的社会秩序时，