短語(yǔ)詞組短語(yǔ)irrigation inverted siphon 地下渠道irrigation n inverted siphon 地下渠道siphon irrigation 虹吸琯灌溉siphon tube irrigation 虹吸琯灌溉siphon n irrigation 虹吸琯灌溉 返回 irrigation siphon