Relation back
[法] 追溯效力
🧩 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
As far as possible, the teacher should expose the student to real life situations.
教师应该尽可能使学生接触现实生活的情景。
He has a ring.
他有一只戒指。
The latest exhibitions, films, or plays are only a short bus ride away.
坐公共汽车几站路，就可看到最新的展览、电影、戏剧。