make remarkable achievements in + 方面know clearlylag far behind … 落后sth. is in the process of improving 正在改善obstacle 障碍stand in the way of development 阻碍制约发展great and better 更大更好by the middle of the 21st centuryin order to … ,what is crucial is to … 为了……重要的是……persist in reform and innovation 坚持改革和创新further free the mind 进一步解放思想a reservoir of energy 源源不断/大量的 动力propel development 推进发展in terms of 以… 为单位；就 …而言
