China's capital Beijing, under fire to take effective measures against air pollution, raised its four-tiered alert system to “orange” for the first time on February 21, 2014. Heavy smog was expected to enshroud the city for an indefinite period.
ຂ່າວປະເພດຕ່າງໆ
- ວີດີໂອຂ່າວ
- ຂ່າວວີໂອເອໃນ 60 ວິນາທີ
- ວິທະຍາສາດ-ເທັກໂນໂລຈີ
- ວີດີໂອ ອັງກິດສຳລັບລາຍງານ