adj.不節(jié)儉的；浪費(fèi)的；不盈利的；不劃算的

=uneconomic.

Miners had to dig deeper to extract coal, which became uneconomical. 為了提高產(chǎn)量，礦工不得不向更深處挖掘，這變得越來越不合算。

I was taken in by the salesman-the car turned out to be uneconomical and unreliable. 推銷員欺騙了我——那輛汽車結(jié)果既不經(jīng)濟(jì)又不牢靠。