搜索
Envelope
01
信封
a thin, paper cover in which we put and send a letter
02
信封
any wrapper or covering
03
信封
the bag containing the gas in a balloon
04
信封
the maximum operating capability of a system (especially an aircraft)
05
信封
a natural covering (as by a fluid)
06
信封
a curve that is tangent to each of a family of curves
例子
The envelope contained a surprise birthday card.
She handed me an envelope with a note inside.
She found an old envelope with photos in it.
He wrote the address on the envelope.
I need to buy some envelopes for my Christmas cards.
