参考例句

1. More economical waste treatment plant design will be possible with less guesswork.

   有可能以较少的猜测来更经济地进行废水处理站的设计。

2. To be economical these processes will require efficient solvent recovery operations.

   若要经济，就要有有效的溶剂回收工序。

3. Accordingly Collins and I spent several economical and instructive weeks together in Ravenna.

   因此，科林斯同我在腊万纳过了几周节俭的，有益的生活。

4. "We won't be economical today," cried Bertha,"I feel utterly reckless."

   “咱们今天不要节省，”伯莎大声说，“我根本不在乎。”

5. She is economical with/in her use of salt when cooking.

   她烹饪时用盐很省.

6. The cruise condition must also be economical and adequate for the aircraft mission.

   巡航状态也必须是经济的以及能够适应飞机的飞行任务。

7. They examined it under all its different aspects, physical, meteorological, economical , or moral.

   它们从物理学，气象学，经济学或者伦理学的各个不同方面研究它。

8. Engineers are forever seeking more economical methods of solving old problems.

   工程师们常常探索解决老问题的更加经济的办法。

9. We call such a spanning subgraph T an economical spanning subgraph.

   我们称这样的生成子图T为廉价的生成子图。

10. Going by train is more economical than going by plane.

    坐火车比坐飞机更节约。

反义词