In spite of the fact that the government has invested a lot, the air pollution is still a major concern. (Using Although)

`1`. In spite of the fact that the government has invested a lot, the air pollution is still a major concern.

`=` Although the goverment has invested a lot, the air polution is still a major concern,

`->` In spite of the fact that + S + V = Although + S + V: mặc dù

`Dịch`: Mặc dù chính phủ đã đầu tư rất nhiều, ô nhiễm không khí vẫn là mối bận tâm.