| 1. | It is ill to be defined .
很难对它下定义。 |
| 2. | The evidence, by definition, is not likely to be conclusive .
从下定义的角度来看，证据不见得是确凿可靠的。 |
| 3. | To give a definition of a word is more difficult than to give an illustration of its use .
给一个词下定义要比举例说明它的用法困难。 |
| 4. | To give a definition of a word is more difficult than to give an illustration of its use .
给一个词下定义要比举例说明它的用法困难得多。 |
| 5. | Boldface italic type is used to mark very important terms when they are first defined .
对于特别重要的术语，第一次给它们下定义时，用黑斜体字表示。 |
| 6. | The term cardiac arrest may be defined as an unexplained and unanticipated cessation of cardiac activity .
心博骤停一词可以下定义为原因不明，没有先兆的心脏活动停止。 |
| 7. | Aristotle's formulations blocked the possibility of defining society in terms of objective laws and historical processes .
亚里士多德的表述堵塞了根据客观规律和历史过程给社会下定义的可能性。 |
| 8. | Other distinctive taxonomic activities which have been considered worthy of a name are narrower and more easily defined .
其它一些被认为是名符其实的明显的分类学活动，其涵义较窄，易于下定义。 |
| 9. | Strictly speaking, the classical definition of thixotropy pertains only to those fluids that exhibit reversible structural changes .
严格说来，对触变性所下定义只限于那些表现可逆性结构变化的流体。 |
