一 いっ級 きゅう河川 かせん

ikkyūkasen

1. Not a first-class river.; It's not a first-class river.

1. Was a first-class river.

1. First-class river ; First-order river

1. First-class river; Major river

1. It is not a first-class river.; It is not a river of the first class.

1. It's not a first-class river.; It isn't a first-class river.

1. It was a first-class river.; It used to be a first-class river.

1. It is a first-class river.; It is a Class A river.

1. Is not a first-class river.; It is not a Class A river.

1. It wasn't a first-class river.; It wasn't a Class A river.

1. Probably a first-class river.; Likely a first-class river.

1. It was not a first-class river.; It wasn't a first-class river.

1. It wasn't a first-class river.; It wasn't a Class A river.

1. Probably a first-class river.; Likely a class-one river.

1. Was not a first-class river.; Was not designated as a first-class river.

1. If it were a first-class river; If it is a first-class river

1. If it is a first-class river; When it is a first-class river

1. If/when a first-class river