1·As the universe expanded, the radiation would have cooled until it is just the remnant we see today.
随着宇宙的膨胀，辐射逐渐冷却，残余下来的就是我们今日所见的情况。
2·Chongqing Municipality directly under, the economic strength of the rapid increase in urban scale has been expanded, the role of external radiation and leading increasingly evident.
重庆市直辖以来，经济实力迅猛提升，城市规模不断扩大，对外辐射带动作用也日趋明显。