main drainage ditch
英 [meɪn ˈdreɪnɪdʒ dɪtʃ]
美 [meɪn ˈdreɪnɪdʒ dɪtʃ]
网络 总排水沟
双语例句
- The irrigation and drainage system was based on the natural ditches as main drainage ditch, received the seeper of farming ditches or trenches, which were designed vertical to the counter line, making sure of a smoothly drainage.
排灌系统则是以天然河沟作为骨干排水沟道，承接农沟（渠）的积水，农沟（渠）垂直于等高线布置，保证排水通畅。