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outer banquette
一般	外階段 (がいかいだん) River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 前小段 River and Water Resources Glossary (Infrastructure Development Institute Japan) ; 表小段 River and Water Resources Glossary (Infrastructure Development Institute Japan)
outer waterside banquettes
一般	外小段 River and Water Resources Glossary (Infrastructure Development Institute Japan)