This is good, at least you feel that your pay is not effective, no success is an objective factor.

这还是好的，最起码你觉得你的付出没有是有效果的，没有成功是客观因素。

youdao

Efficiency of sand - pack fracture is main factor of determining the stimulation production. It is an effective method that has low cost, good result and pay more and more countries' attention.

填砂裂缝的有效性是压裂施工增产效果的决定因素，清水压裂作为一种成本低、改造效果好的经济有效增产手段越来越受到国内外的重视。

youdao