1. There should be some envelopes floating about somewhere.
   我这里应该有些信封。
2. Advertisements seem to be pushing the envelope of taste every day.
   广告每天都好像在试探品味的极限。
3. We've gone through all those envelopes I bought last week.
   我们用完了我上周买的所有的信封。
4. I began grubbing about in the waste-paper basket to find the envelope.
   我开始在废纸篓里乱翻，想要找到那个信封。
5. I like to keep a few envelopes about in case I need them.
   我喜欢手边常有几个信封, 以应不时之需。
6. Annie stamped the envelope for her.
   安妮替她在信封上贴了邮票。
7. A key was enclosed in the envelope.
   信封中装有一把钥匙。
8. Addressing envelopes all day long is dreary work.
   成天给信封写地址是一种沉闷单调的工作。
9. Have you ordered in enough envelopes this month?
   这月你订足信封了吗?
10. Make sure the stamp is properly glued to the envelope.
    务必把邮票在信封上贴好。
11. The chloroplast envelope has the light yellow color of violaxanthin.
    叶绿体的套膜有紫黄质的淡黄色。
12. I folded the letter and then put it into the envelope.
    我把信折好后放进信封里。
13. Before posting a letter, you should enclose it in an envelope.
    在把信寄出之前你必须把它装入信封内。
14. He deftly folded the typed sheets and replaced them in the envelope.
    他灵巧地将打有字的纸折好重新放回信封 。
15. We seal the back of envelopes.
    我们把信封的背面封上。
16. Peritoneal lavage,poly-tube drainge, omental bursa incision, pancreatic envelope and pancreatic bed brisement were made mainly.
    临床疗效满意,治愈7例,1例死于ARDS。
17. Please enclose a self-addressed envelope.
    请在里面附一个写作你自己地址的信封。
18. Stick down the envelope
    把信封贴牢。
19. An aerogramme is writing paper, envelope, and postage all-in-one.You can get aerogrammes at any post office.
    航空信就是信纸、信封和邮资全在一起的信件，你可以在任何一个邮局买到航空信。
20. The envelope of moving line on the hypocycloid plane may be an epicycloid or cardioid and the...
    摆线逆运动中与动切线成定角的直线,其包络也是圆周渐开线.

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