Recording 19
录音19
A. At the bottom of the system, there is a storage tank, which can hold up to 500 litres of rainwater. The water stored in the tank can be used for general gardening and cleaning.
A、在该系统底部有个贮存水槽，最多能存500公升雨水。 存在水槽里的水可用作一般花园浇灌和清洁工作。
B. A small spring in the centre causes the toy inside to bounce out with a twisting movement. The spring coils back down easily enough so that the toy can fit back into the box.
B、中间的小弹簧会使里面的玩具以扭曲得动作。弹簧很容易收缩，玩具就能收回到盒子里。
C. The water passes through the pipe, and, as it travels along, it carries the weeds with it.
C、水在流经水管时会带走野草。
D. The water in the pool was becoming quite polluted so a pump was used to pump the water out of the pool and force it through a filter.
D、池里的水被污染得很严重了，所以人们用一个泵将水从池中泵出，并使其流经一个过滤器。
E. There is a very fine grille at different points along the pipe. These filter out any large rocks or stones. So the water is very finely strained by the time it reaches the dam.
E、在管子的不同长度处有非常精致的格栏。这些格栏能过滤掉大块的石块。所以当水最后到达水坝时，已经过滤得很仔细了。
F. There is a wheel on the side, which is attached to a small motor that turns the wheel. As it spins, a long chain passes around the outside of it.
F、在边上有个轮子，连着一个驱动轮子的小马达。当轮子旋转起来时，长长的链条绕着其外部旋转。
