| 1. | A great deal of uncertainty exists as the best method .
很难说什么是最好的方法。 |
| 2. | Indeed, a plan does not really exist as such until a decision is made .
其实，在一项决策制订以前，一项计划实际上是不存在的。 |
| 3. | The essence of a book, its soul, can exist as bits of binary information on a reel of magnetic tape .
一本书的精华和灵魂作为二进制信息存储在磁带上。 |
| 4. | Cancer is never going to be eradicated as long as life exists as we know it today .
据我们目前对癌症的了解只要生命存在一天，癌症就永远不会被彻底根除。 |
| 5. | No convincing hypothesis of the origin of rilles exist as yet, but some suggestions have been advanced .
至今没有一种假说可以有力地说明月隙的起源，但有些见解是新颖的。 |
| 6. | Invertase can exist as active monomer (light invertase) or as an aggregated active form (heavy invertase) .
转化酶可以活性单体（轻转化酶）或聚集的活性形式（重转化酶）存在。 |
| 7. | Data items exist as either strings of characters or binary fit patterns occupying whole bytes or words .
数据项既可以字符串地形式出现，也可以占据整个字节或字的二进制模式出现。 |
| 8. | The cuticle exists as the separable outer boundary and consists of a layer of wax and pectin materials that appears to be structureless .
可以区分开来的外部周界是表皮层，由无定形组织的蜡质和果胶构成。 |
| 9. | One may conclude that these two materials exist as a chemical mixture with distinct particles of lead oxide and lead .
人们可以认为这两种物质是作为一种化学混合物而存在的，它具有明显的氧化铅和铅的颗粒。 |
| 10. | This approach also gives undue importance to the small drop sizes, since it is assumed that they are never burned but always exist as in steady state .
这个方法假设小尺寸液滴处于稳态下并不燃烧，因而对其重要性估计得过高。 |
