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所屬欄目：綠色空間
所屬頻道：CCTV-10科教
年份：2011
展開全部
簡介：本期主要講述水資源的重要性。好多地方原本都是綠洲最後變成沙漠。面對缺水的事實，我們要懂得知危思變。收起
知危思變 上
知危思變 下
複製成功！
PC客戶端下載
移動客戶端下載
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