情況：501Please respect copyright.ＰＥＮＡＮＡ6qoKgQWzC4
光污染太嚴重使得我們看不到星星。501Please respect copyright.ＰＥＮＡＮＡA7hYWT5Bz7
承上：501Please respect copyright.ＰＥＮＡＮＡXFAHwBeKcs
白天我們看不到星星。501Please respect copyright.ＰＥＮＡＮＡpp8FzUfKgI
太陽照亮了整片大地。501Please respect copyright.ＰＥＮＡＮＡnyArLXSsR5
題：501Please respect copyright.ＰＥＮＡＮＡxgx3orWWu0
太陽光的光線是什麼？
