情況：502Please respect copyright.ＰＥＮＡＮＡbtxtpi5D9k
光污染太嚴重使得我們看不到星星。502Please respect copyright.ＰＥＮＡＮＡOF7tw5z61A
承上：502Please respect copyright.ＰＥＮＡＮＡDc8ICbIjTU
白天我們看不到星星。502Please respect copyright.ＰＥＮＡＮＡ8K484uepOm
太陽照亮了整片大地。502Please respect copyright.ＰＥＮＡＮＡ3lIOWrUEtm
題：502Please respect copyright.ＰＥＮＡＮＡEXA0qEgDHN
太陽光的光線是什麼？
