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 is siphoning out petrol from a tank. 他在从油罐里吸出汽油。
- 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。
- I need a funnel to pour petrol into the tank. 我需要一个漏斗把汽油灌进油箱。
- 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？
- Please run off the water from the tank. 请把桶里的水放出。
- He stuck a stamp on the envelope. 他在信封上贴上邮票。
- He has filled up the tank with petrol. 他已给油箱装满汽油。
- She opened the envelope with her fingertips. 她用指尖弄开了信封。
- Is there any water left in the water tank? 水箱里还有水剩下吗？
- The envelope's seal was torn open. 信封封缄被撕开了。
- The gas is stored under pressure in the tank. 该气体在压缩状态下贮存于罐中。
- The (flap of the) envelope was unstuck. 信封(的封口)没粘住。
- There are several enclosures in the envelope. 信封内装有几份附件。
- He fed the storage tank with gasoline. 他往储油罐里加满汽油。
- An envelope or wrapper for mail. 封套，信封为邮寄而制的信封或封套
- Every apartment house has a water tank on its roof. 每栋公寓房子都有一个水塔。
