| 1. | He is only away for short periods -- a week at the longest .
他只是短期外出至多一周。 |
| 2. | But over a short period there should be no lasting damage .
但在短期内不会造成长远的损害。 |
| 3. | The man went from rags to riches in a short period of about five years .
在短短的大约5年时间内，那个人就由贫致富。 |
| 4. | Smaller particles were more active, but persisted for a shorter period of time .
较小的颗粒更为活泼，但持续时间较短。 |
| 5. | The airplane extended the distances that people could travel in a short period .
飞机使人们能在短时间内作远距离的旅行。 |
| 6. | It is in fact quite serviceable for seiches of an appreciable magnitude and short period .
但事实上它对量值大而周期短的假潮还颇适用。 |
| 7. | The higher modes have shorter periods than the fundamental mode and, moreover, they have higher velocities .
高振型波比基阶振型波周期短，波速高。 |
| 8. | Most studies of co effects have administered co at relatively high concentrations for short periods of time .
大多数有关CO影响方面的研究工作是在CO较高浓度下，暴露较短的时间条件下进行的。 |
| 9. | Certain goals should be scheduled for accomplishment in a much shorter period and others for a much longer period .
某些目标应当安排在很短的时间内完成，而另一些目标则需要安排较长的期间才能达到。 |
| 10. | In many countries, the guest's passport or identification card must also be checked or held for a short period of time because of police regulations .
在许多国家，按警察局规定还必须检验护照和身份证，或将这些证件留存一段时间。 |
