迄今很少有关于全体人口的研究。

Little research so far has dealt with the general population.

youdao

迄今为止，很少有关于中国季度GDP的研究。

Up to now, there has been little investigation of the quarterly GDP in China.

youdao

迄今为止，很少有关于中国季度GDP的研究。

Up to now, there has been little investigation of the quarterly GDP in China.

youdao