广播电视英语短句 第 1 课：太阳能热水器-3

These corrugated sheets often are used to make the roofs of houses. 这些波纹板常被用做屋顶。

Once the water is heated, it is kept hot with material called insulation. 一旦水热了，一种绝缘材料会保持水的温度。

This allows the water to stay warm for a long time. 这就使热水在很长一段时间内不会冷却。

The second part of the solar water heater holds the water for the system. 太阳能热水器的第二部分可以为这个系统储水。

This storage tank can be a container that holds about one hundred liters. 这种水箱能储存大约一百升的水。

Two rubber pipes are attached to the water storage tank. 两根橡皮管连接着这个水箱。

One pipe lets water flow into the system. The other lets water flow out. 一根是进水管，另一根是出水管。