http://www.pons.de/produkte/3-12-517841-X/（牛津大学出版社授权产品）
back-of-the-envelope [美 ˌbækəvðiˈɛnvəloʊp, 英 ˌbakəvðəˈɛnvələʊp] 形
back-of-the-envelope calculation/estimates:
- the envelope was postmarked York
-
在《PONS词典》中的词汇
英语
西班牙语
window envelope 名词
- window envelope
-
在《PONS词典》中的词汇
英语
西班牙语
单语范例（未经PONS编辑处理）
If you are unable to visit the foreign government office in person, you will have mail in your passport, fees and application form along with a self-addressed return envelope.
www.castanet.net I had read in an article that writers should always send a self-addressed stamped envelope along with a script they were submitting.
en.wikipedia.org The winners name can be obtained by writing to the competition address with a self-addressed envelope after the closing date.
www.bordercountiesadvertizer.co.uk The organization, consisting of six young self-addressed millennials, has only been around for a year.
torontoobserver.ca If mailing your query, be sure to enclose a self-addressed, stamped envelope for the agent's response.
www.huffingtonpost.com