As we all know, water is essential in our daily life. We drink water every day, we use water to wash things and cook food, we also use water to make machines. People can't live without water.
我们都知道水对于日常生活的重要性。我们每天喝水，用水洗东西和烹制食物，我们还用水来制造机器。离开水，人类就无法存活。
Though about 75% of the earth is covered with water, only 3% of it is fresh water. So we must save water by having a shower instead of a bath. We can save water by fixing dripping taps immediately and we can also save water by not washing under a running tap.
虽然地球75%都被水覆盖，但其中只有3%是淡水。所以我们应该用淋浴代替泡澡来节约水，同时及时修好滴水的水龙头，并且不要开着水龙头洗东西。