Envelope
01
봉투, 포장
a thin, paper cover in which we put and send a letter
예시들
He wrote the address on the envelope.
그는 봉투에 주소를 썼다.
I need to buy some envelopes for my Christmas cards.
크리스마스 카드를 위한 봉투를 몇 개 사야 합니다.
02
봉투, 포장
any wrapper or covering
03
봉투, 가스 주머니
the bag containing the gas in a balloon
04
봉투, 운용 한계
the maximum operating capability of a system (especially an aircraft)
05
봉투, 덮개
a natural covering (as by a fluid)
06
포락선, 봉투
a curve that is tangent to each of a family of curves
