envelopes
US /ˈɛnvəˌloʊps/
UK /ˈɛnvələʊps/
复数名词
信封
flat, usually paper, containers for a letter or other documents, with a gummed flap for sealing
示例:
•
I need to buy some envelopes to mail these invitations.
我需要买一些信封来寄这些请柬。
•
The secretary sorted the letters into different envelopes.
秘书将信件分装到不同的信封中。