如何使用 "economical" 造句

1. High oil prices have made it economical to extract .
高油价也使得此类天然气的开采具有了经济性。
2. But households and businesses are prone to huge swings during peak times and are less economical overall .
但是家庭和事业用电在高峰时段却有巨大涨落,总体上来讲是不节约的。
3. It 's economical and helps your waistline as well .
这样很经济并且不会使你的腰变成水桶腰。
4. Economical management is paramount in china .
在中国,经济的健康发展是最重要的。
5. Some of the most efficient and economical energy solutions combine energy sources .
一些最有效的以及经济的能源解决方案所结合的能源。