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？
- A display device that uses a cathode ray tube. 一种使用阴极射线管的显示装置。
- He stuck a stamp on the envelope. 他在信封上贴上邮票。
- He held the test tube in his hand thoughtfully. 他沉思地把试管拿在手里。
- She opened the envelope with her fingertips. 她用指尖弄开了信封。
- The envelope's seal was torn open. 信封封缄被撕开了。
- Cathode-ray tube envelopes and faces 阴极射线管体及管面
- The (flap of the) envelope was unstuck. 信封(的封口)没粘住。
- I must buy a tube of toothpaste. 我必须买一支牙膏。
- There are several enclosures in the envelope. 信封内装有几份附件。
- An envelope or wrapper for mail. 封套，信封为邮寄而制的信封或封套
- This tube is flexible but tough. 这管子柔软但很坚固。
- A glass tube for enclosing the flame of a lamp. 玻璃灯罩围住灯的火焰的玻璃管
- A good way to remove a stamp from an envelope is to soak it off. 从信封上取下邮票的一个好办法就是用水把它泡下来。
- Apply solution to the tube and allow to become tacky. 在内胎上涂抹胶水并让它发粘。
