| 1. | Iron corrodes unless it is greased or kept clean .
如果不涂油或保持清洁铁便会腐蚀。 |
| 2. | Without the veneer, he would be exposed immediately .
如果不披着一层外皮，他马上就会暴露。 |
| 3. | He might otherwise have quarrels with his relatives .
如果不这样做，他们就可能和亲属发生争吵。 |
| 4. | This is hard to see without reference to a globe .
如果不参照着一个地球仪来看，这是很难理解的。 |
| 5. | Unless you work harder , you will not pass the examination .
如果不加紧用功，你就不能通过考试。 |
| 6. | Failure to do so defeats the very purpose of delegation .
如果不这样做的话，就会失去授权的意义。 |
| 7. | If the fees are not paid, then the patent is said to have lapsed .
如果不付专利费，这项专利就告失效。 |
| 8. | The inflammation may subside spontaneously if infection does not develop .
如果不发生感染，炎症可自然消退。 |
| 9. | If i don't execute my commission, she'll tear my eyes out .
我如果不执行我这个使命，她会把我的眼睛都挖出来的。 |
| 10. | We can 't keep abreast of the developing situation unless we study harder .
我们如果不加强学习，就会跟不上形势。 |
