信封的英文怎么说

信封的英文：
envelope

• A packet of envelopes
  一扎信封
• This is a buff envelope.
  这是张牛皮纸信封。
• I slit the envelope open
  我撕开了信封。
• Fold the letter (in two) before putting it in the envelope.
  把信(对)折起来再装入信封。
• How intolerable the crested paper is
  那花里胡哨的信封，真俗气。
• I make some rough calculation on the back of an envelope.
  我在信封背面做了一些估算。
• He glanced at the envelope and recognized his uncle's handwriting.
  他瞥了一眼信封，认出了他叔叔的笔迹。
• Please enclose a self-addressed envelope
  请在里面附一个写作你自己地址的信封。
• He opened the bulky envelope first to skim the typewritten pages.
  他首先打开那只厚实的信封，翻了翻那份打字文件。
• His hand went into his pocket and a forefinger felt its way under the flap of the envelope, ripping it open in jerks
  他把手伸进兜里，一只食指摸索到信封的口盖，分几截把信扯开了。