您要查找的是不是：
- Have you stuck down the back of the envelope? 信封背面开口处贴牢了吗？
- He steamed the stamp off the envelope. 他用蒸汽把信封上的邮票揭下来。
- He glued a stamp onto the envelope. 他把邮票贴在信封上。
- As he picked up the envelope, a key dropped out. 他拣起信封时，一把钥匙掉了出来。
- As she picked up the envelope, a key dropped out. 她拾起信封时，一把钥匙掉了出来。
- Put a stamp on the envelope, will you? 在信封上贴张邮票，好吗？
- He stuck a stamp on the envelope. 他在信封上贴上邮票。
- She opened the envelope with her fingertips. 她用指尖弄开了信封。
- There are several enclosures in the envelope. 信封内装有几份附件。
- In order to effectively machine an orthogonal face gear,the geometrical design of tooth profile and the undercut condition for the gear are investigated via the enveloping method. 为了实现正交面齿轮的加工,采用包络法对正交面齿轮齿廓的几何设计方法和根切条件进行了研究。
- IMPROVEMENT ON THE ENVELOPE METHOD EVALUATING R-CURVE OF CERAMICS 测定陶瓷材料阻力曲线的包络线法的改进
- Keywords R-curve;the envelope method;tangency point;improvement; 阻力曲线;包络线法;切点;改进;
- He ripped off one end of the envelope and pulled out the letter. 他撕开信封的一端，抽出里面的信件。
- He addressed the envelope before mailing the letter. 寄信前，他在信封上写上地址。
- I didn't open your letter, the envelope came unstuck. 我没有拆你的信，信封本来就没粘牢。
- The papers are falling out of the envelop, push them back. 论文从封袋里掉出来了，把它们放回原处。
- Analysis of Thin Film's Optical Parameters Based on the Envelope Method 基于包络线法的薄膜光学常数分析
- He steamed the valuable stamp off the envelop. 他用蒸汽熏揭下信封上的邮票。
- The envelope's seal was torn open. 信封封缄被撕开了。
- The envelope was buried in some papers on my desk. 那只信封被我桌子上的一些文件盖住了。
