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
Do you think they're open?
你们说现在还开门吗？
Joys shared with others are more enjoyed.
与众同乐，其乐更乐。
Mmm, it doesn't seem to fit very well.
嗯，这套看来不大合身。