加德桥是一个长达半英里的大型输水渠道，大约在两千年前建造而成。
The Pont du Gard is a huge aqueduct half a mile long that was built nearly two thousand years ago.
而在降雨时节，紧邻河流的公园区域便充当了输水渠道，输送水体向下游流动。
In a heavy downpour, however, the park land that is next to the river doubles up as a conveyance channel, carrying the water downstream.
其组成部分主要有：泵船、船池、输水管道、输水渠、输电线路、挖泥机械等。
The system consists of pump, ship, ship pool, water-conveyance pipeline, canal, power transmission line, dredging equipment and so on.
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