声を大にして言う (こえをだいにしていう) Japanese meaning | KotomoraMeanings
1
expression, godan verb (-u)
say out loud; yell out; emphasize
Fixed expression meaning to speak loudly or emphatically, often to make a point or express strong opinion. Can be used literally or figuratively.
See also: 声を大にする
声を大にして言いたいのは、環境保護の重要性です。
What I want to emphasize is the importance of environmental protection.