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1·The factory is no longer economically viable.

这个工厂在经济上已经维持不下去了。《牛津词典》

2·Services could be operated more efficiently and economically.

可以更有效、更经济地提供服务。《柯林斯英汉双解大词典》

3·Now is the time when we must all live as economically as possible.

现在是我们都必须尽可能节俭度日的时候了。《柯林斯英汉双解大词典》

4·The country has made enormous strides politically but not economically.

这个国家在政治上取得了巨大进步，但在经济上却没有。《柯林斯英汉双解大词典》

5·The pit is being shut down because it no longer has enough coal that can be mined economically.

那个煤矿要关闭了，因为储量不足，难以经济开采。《柯林斯英汉双解大词典》

6·Both environmentally safe and economically sound?

既环保又经济？

7·It is not economically practical to close or relocate the factories.

关闭或迁移工厂在经济上是不现实的。

8·It was proof that they were living in a dynamic, economically successful country.

这证明他们生活在一个充满活力、经济发展成功的国家。

9·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。《新英汉大辞典》

10·Governments need to formulate energy policies that promote economically and environmentally sound development.

各国政府需要制订促进经济和环境充分发展的能源政策。

(1)economically feasible经济上可行的，经济上合算

(1)economically affordable housing经济适用房