Each large mature tree ACTS as a giant waterpump, recycling millions of gallons of waterback into the atmosphere via evaporation from its leaves or needles.
每个大成年树木就如同一个巨大的水泵，通过其叶或针的蒸发，将成百万加仑的水回放到大气中去。
2
The emergency cooling system pump and motor for a boiling-water reactor are roughly the size and height of a compact hatchback car standing on its back bumper.
沸水反应堆紧急制冷系统的水泵和电动机和紧凑的两厢车竖起来的大小差不多。
3
Export pump with check valve, it will immediately turn off to prevent reverse flow back high-pressure waterpump.