| 1. | The runners started at intervals .
赛跑的人每隔五分钟出发一批。 |
| 2. | At intervals she would stop for a rest .
她不时停下来休息。 |
| 3. | At intervals miss simon would make a tour of inspection .
休息的时候，西蒙小姐就来回视察。 |
| 4. | Precipitates are usually collected by centrifugation at intervals .
常常是用离心法分段收集沉淀的。 |
| 5. | Melanie was silent too, but at intervals her quiet face was wrenched with pain .
媚兰也默默无声，不过她那平静的面容不时要因阵痛而扭曲。 |
| 6. | Disfiguring subcutaneous lesions bulge onto the surface and at intervals discharge pus .
皮下损害的形象是向表面凸起，并间断地分泌出脓液。 |
| 7. | A map with contours spaced at interval of half wavelength of the viewing light is discernable .
以可见光的波长的一半为间隔的轮廓线是可以辨认的。 |
| 8. | As he crept along with his eyes on the ground, the man gave utterance at intervals to uncouth, inarticulate sounds .
他两眼盯着地面一步步移动着，不时发出粗里粗气的哼声。 |
| 9. | It was some minutes before she could go on with her letter; the frequent bursts of grief obliged her at intervals to withhold her pen .
过了一阵以后她才能继续写信。悲痛的袭击使她不能不时时住笔。 |
| 10. | Indeed , it may well be that those whose work is their pleasure are those who most need the means of banishing it at intervals from their minds .
的确，很可能是那些工作即消遣的人们最需要这种方法，以便使大脑每隔一段时间从工作念头中解脱出来。 |
