| 1. | Economically minable limestone does not occur so frequently .
经济上值得开采的石灰石并不这样多。 |
| 2. | Many of the poor are untrained, stuck in economically stagnant areas .
许多穷人都没有经过职业训练，居住在经济停滞的地区。 |
| 3. | This region is becoming increasingly important both strategically and economically .
这个地区的战略地位和经济地位变得越来越重要了。 |
| 4. | Here the constraint is the difficulty of designing an economically feasible electric car .
这里的困难是难以设计出一种经济上合理的电动汽车。 |
| 5. | The biggest payoff epidemiologically and economically is in secondary prevention .
从流行病学和经济学的角度来看，最大的收益是防止疾病的继发。 |
| 6. | The air services are not yet sound enough economically to operate without government subsidies ...
航空公司还不景气，没有政府的补贴就难以经营。 |
| 7. | On the surface the american people had never seemed so economically healthy as in 1929 .
从表面上看，美国人民经济上似乎从来没有象在1929年那样兴旺。 |
| 8. | More services become economically feasible when large numbers of people are crowded into cities .
由于大量人口涌向城市，兴办更多的服务项目在经济上行得通了。 |
| 9. | Manhood made the arrangement to suit herself economically most desirable from her point of view .
曼胡德为了方便自己作了这样的安排--从她的角度来说在经济上是最划算的。 |
| 10. | Both alterations must be justified economically by special considerations of available equipment .
两种改进还需针对可得到的设备进行具体分析，以证明它在经济上是合算的。 |
