[qú dào]
（引水灌溉的水道） irrigation ditch; canal; channel
Canals have been built to take water to the desert.
開掘渠道把水引進沙漠。
（途徑） medium of communication; channel
through various channels
通過各種渠道
through diplomatic channels
通過外交渠道
through the medium of cultural exchange
通過文化交流的渠道