缺乏后劲 meaning in English

unsustainable momentum

All of these problems are the key points that lead to a lagged development of western areas
等等这些因素都是导致西部整体资源开发不足，经济发展滞后，企业发展缺乏后劲的重要因素。
As a developing country , the average quantity of resources occupancy per person of china is obviously below the average level of the world . and with the development of economy , the problems about pollution of the environment and lack of natural resources become more and more serious
我国作为一个发展中国家,人均资源占有量远低于世界平均水平,同时粗放型经济模式的高投入、低产出更加重了环境污染、资源短缺等问题,使得经济效益的提高缺乏后劲。
Because of the influence of enterprise ' s inherent reason and outside factors , the growing of enterprise generally lacks of impetus that directly influence the enterprise ' s sustained development . the average age - of enterprise is only 3 - 4 years and survival rate is only 20 % - 30 % during the recent 20 years
近二十年来，由于中小型民营科技企业自身的原因以及外部环境因素的影响，据有关部门的统计，企业的成活率仅为20 % - 30 % ，平均寿命只有3 - 4岁，而且企业成长普遍缺乏后劲、直接影响了企业的可持续生存与发展。