您要查找的是不是：
- The front cover of the novel has been torn off. 这本小说的封面已被撕掉。
- Pig iron used as permanent ballast. 压载铁做为永久性压舱物的生铁
- The ship was furnished with ballast. 船上装了压舱物。
- You can't judge a book by its cover. 不能根据封面判断一本书(不可以貌取人)
- The canvas covering was peeled back. 盖在上面的帆布被揭开了。
- The ballast placed in the ship can keep the ship steady. 放在船上的压舱物可以保持船的平稳。
- The covering of forestry in our town is 60 percent. 我们镇的森林覆盖率是百分之六十。
- The insurance cover is optional. 保险范围可以随意选择。
- The house is red brick without a covering of stucco. 那房子是红砖砌的，没有用灰泥粉刷。
- A protective covering of bony plates or scales. 护身甲壳保护骨盘或介壳的覆盖层
- The ballast may be thrown out to make the balloon go higher. 沙袋可以拋掉以使气球飞得更高。
- The seed has a hard exterior covering. 这种子外壳很硬。
- We tried to find cover from the storm. 我们设法寻找遮蔽暴风雨的地方。
- A boxlike covering or enclosure. 盒式箱罩，盒式包装
- A covering resembling a cloak or mantle. 斗篷状覆盖物一种类似长袍或斗蓬的遮盖物
- A crown for covering or sealing a tooth. 齿冠遮盖或密封牙齿的冠状物
- A protective covering for the knee. 护膝用于保护膝盖的覆盖物
- Dust the repair to prevent adhesion to outer cover. 清整修补处以防与外胎粘连。
- Arc lamps require a current-limiting ballast. 弧光灯需要一个限流镇流器。
- His business was a cover for drug dealing. 他的商行是进行毒品交易的幌子。
