Back letter
[经] 退回信件
🧩 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;
letter
['lɛtɚ]
n. 信;证书，许可证;字母，文字;字面意义;
vt. 用字母标明;写字母于;加标题;
vi. 写印刷体字母;
🗣️ 情景例句
A little bird told me that Tony was going to be fired.
消息灵通人士告诉我他要被炒鱿鱼了。
He often plays golf.
他常常去打高尔夫球。
Go through the gate and you'll find the entrance to Bear Country on the other side.
穿过大门，你就可以在门那边找到通往熊国的入口了。