back number meaning in English
过期杂志；落后于时代的人，老古董。
Examples
- Never mind about him. he's a back number .
不要理他，他是个顽固派。 - A lot of old books and back numbers have been sold
好多过期的书刊杂志都卖了。 - I have sold a lot of old books and back numbers
好多过期的书刊杂志我都卖了。 - I am not entirely a back number , taylor
泰勒，我还不是一个毫无力量的人。 - He collects back numbers of comic magazines
他收集过期的连环漫画杂志。