we need envelope with a stamp on the
问题描述:
we need envelope with a stamp on the
答
flap指的是信封口的折边,也就是封口处.
We need an (some) envelope(s) with a stamp on the flap.envelope前面做好有个限定词.
我们需要一个(一些)封口处贴有邮票的信封.