Back relation
[法] 追溯
🧩 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;
🗣️ 情景例句
How is he making out in his job now?
他的工作进展如何？
Have you heard the weather forecast?
你听天气预报了吗？
A great many goods were sent to the exhibition from various parts of the world.
大量的商品从世界各地运送到了博览会，