Txhawm rau ua kom BNP ozone cov khoom lag luam nkag mus tau ntau dua hauv ntiaj teb, peb tau pib BNP ozone thoob ntiaj teb faib rau xyoo 2014, suav nrog kev lag luam, kev muag khoom thiab kev pabcuam rau cov neeg siv khoom.
Post lub sij hawm: Jun-11-2014