に渡わたり

expression

throughout; over a period of; over a span of

Used with time or spatial expressions to indicate that something extends across a whole range or period. Often appears as にわたって or にわたり.

See also: 渡る · にわたって

• 会かい議ぎは3時じ間かんに渡わたり続つづいた。

  The meeting continued for three hours.

• 彼かれは長なが年ねんに渡わたりこの分ぶん野やで研けん究きゅうを続つづけてきた。

  He has been conducting research in this field for many years.