当とう然ぜんのことながら

expression, adverb

naturally; not surprisingly; understandably; as a matter of course

Used to introduce a statement that follows logically or is expected given the circumstances. Often placed at the beginning of a sentence or clause.

• 当とう然ぜんのことながら、彼かれはその申もうし出でを断ことわった。

  Naturally, he turned down the offer.

• 当とう然ぜんのことながら、準じゅん備びには時じ間かんがかかる。

  As a matter of course, preparation takes time.