- 洪: I big; vast; grand
- 道: road; way; route; path
- 排洪道;泄洪道: floodway
- 分洪道: by-pass of flood; flood by-pass; flood diversion channel; flood relief channel (floodway); floodreliefcha el(floodway); floodway (flood relief channel); floodway channel; floodway(floodreliefcha el)
- 滚洪道: spillway
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