| 1. | It 's more economical to use gas than coal ..
烧煤气比烧煤上算。 |
| 2. | This was a most economical way to get over it .
这是一种非常省钱的蒙混办法。 |
| 3. | Cook them four hours on a small, economical flame .
用文火把它们煮上四个钟头。 |
| 4. | Trina had always been an economical little body .
屈丽娜一向就是这么个精打细算的人。 |
| 5. | These instruments are extremely compact and economical .
这些仪器体积极小，十分经济。 |
| 6. | We must find economical methods for extracting oil from shale .
我们必须找到从页岩中采油的经济方法。 |
| 7. | 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。 |
| 8. | 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。 |
| 9. | 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。 |
| 10. | "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。” |
