求翻译：按照多阶段分层随机整群抽样的原则，根据我国地理分布特点，兼顾经济发达地区和偏远落后地区，考虑到人口及民族构成是什么意思？

In accordance with multi-stage stratified random cluster sampling principle, according to China's geographical distribution, both economically developed regions and remote and backward areas, taking into account the population and ethnic composition of the

In accordance with the multi-stage stratified random sample group, in accordance with the principles of our country, taking into account geographical features economically developed areas and remote and backward areas, taking into account the population and ethnic composition

According to the multi-stage lamination stochastic group sampling principle, according to our country geographic distribution characteristic, the proper attention to both economy developed area and the far away backwardness area, considered the population and the nationality constitute

In accordance with the principle of multi-stage stratified random cluster sampling, according to geographical distribution, taking into account economic developed areas and in remote backward areas, taking into account the demographic and ethnic composition

In accordance with the principle of multi-stage stratified random cluster sampling, according to geographical distribution, taking into account economic developed areas and in remote backward areas, taking into account the demographic and ethnic composition