Back-number
n. 过期刊物；老古董
🧩 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
There's your sleeping bag.
这是你们的睡袋。
Some students quit school due to poverty.
一些学生因贫困而辍学。
All the cattle had been moved into stalls and we stood to lose little.
所有的牲口已提前转移到畜圈里，没有造成什么损失。