您要查找的是不是：
- Envelope machine window patching machine envelope making machine 复膜机信封机
- The machine must break down at this busy hour. 正忙的时候，机器偏偏又坏了。
- The uses of this machine are manifold. 这台机器有多种用途。
- 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？
- The new grinding machine passed all tests. 这台新磨床通过了所有的试验。
- He stuck a stamp on the envelope. 他在信封上贴上邮票。
- Oil feeds into the machine through this tubing. 油经过这个管子流入机器。
- She opened the envelope with her fingertips. 她用指尖弄开了信封。
- Did you get a good trade-in on your sewing machine? 你以旧缝纫机折价换新合算吗？
- The envelope's seal was torn open. 信封封缄被撕开了。
- The (flap of the) envelope was unstuck. 信封(的封口)没粘住。
- You may stop the machine by pushing this button. 按下这个按钮你就可以关掉这个机器。
- There are several enclosures in the envelope. 信封内装有几份附件。
- Just press the button and the machine will start. 只要一按电钮，机器就会开动。
- The machine cast up a big heap of earth. 机器卷起了一大堆泥土。
