nannen kakō
1. fireproof
Noun
1. fireproof
1. mouth of river; estuary
1. how many years; how long
2. what year
1. manufacturing; processing
1. descent; fall
1. Estuary; Mouth (of a river)
1. If the river mouth; When the river mouth
1. If the river mouth…; When the river mouth…
1. Was an estuary.