economical

形容词 economical:

1. using the minimum of time or resources necessary for effectiveness
   同义词：economic
2. of or relating to an economy, the system of production and management of material wealth
   同义词：economic
3. avoiding waste
   同义词：frugal, scotch, sparing, stinting

1. When we had done the costings on the project, it was clear it would not be economical to go ahead with it.
   我们计算了成本，清楚表明这项工程不合算。
2. A monthly is more economical than 4 weeklies.
   一张月票比四张周票上算。
3. With the rapid economical development, China's position on the international stage is getting more and more important.
   随着经济迅速发展，中国在国际舞台上的地位变得愈来愈重要了。
4. The explosion of oil prices caused an economical crisis.
   石油价格的急剧上涨引起了经济危机。
5. Diesel is the more economical in fuel on a pound per horse power basis.
   以一磅对一马力的比率而言，柴油式在燃料上是比较经济的。
6. She writes novels with economical style.
   她以简练的风格写小说。
7. This is not an economical method of heating.
   这不是一种经济的取暖方式。
8. She is economical in her use of salt when cooking.
   她烹饪时用盐很少。

ec.o.nom.i.cal

adj.（形容词）
Prudent and thrifty in management; not wasteful or extravagant.See Synonyms at sparing
节俭的，节制的：管理上勤俭节约的；不浪费或不挥霍的参见 sparing
Intended to save money, as by efficient operation or elimination of unnecessary features; economic:
节约的，俭省的：通过高效率的运作和削减不必要的性能来节省费用的；节约的：
例句：
a modern, economical heating system; an economical approach to control of corporate growth.
新型节能供暖系统；控制公司发展的经济手段

【引伸】
ec.onom.ically
adv.（副词）