naturally; as is to be expected — an adverbial phrase indicating that something is obvious or expected.
当然ながら彼の提案には賛同者もいれば反対者もいる。
Naturally, there are both supporters and opponents of his proposal.
当然ながら子供には難しい内容だ。
Of course, it's a difficult topic for children.
安全が最優先されるのは、当然ながら当然のことである。
It goes without saying that safety is the top priority.