正在缓冲1% 2% 3% 4% 5% 6% 7% 8% 9% 10% 11% 12% 13% 14% 15% 16% 17% 18% 19% 20% 21% 22% 23% 24% 25% 26% 27% 28% 29% 30% 31% 32% 33% 34% 35% 36% 37% 38% 39% 40% 41% 42% 43% 44% 45% 46% 47% 48% 49% 50% 51% 52% 53% 54% 55% 56% 57% 58% 59% 60% 61% 62% 63% 64% 65% 66% 67% 68% 69% 70% 71% 72% 73% 74% 75% 76% 77% 78% 79% 80% 81% 82% 83% 84% 85% 86% 87% 88% 89% 90% 100% 91% 92% 93% 94% 95% 96% 97% 98% 99%- 2 0 1 1 倾 情 出 品 -防治水污染 保护水环境702班主题班会作者：傅叶倩视频 三分陆地七分海洋三分陆地七分海洋可是可是我们缺水我们缺水由于海水是咸水，不能直接饮用，所以通常所说的水资源主要是指陆
