to keep talking; to go on and on; to talk non-stop
母は同じことを何度も言い続けた。
My mother kept saying the same thing over and over.
彼は自分の正しさを言い続けている。
He keeps asserting that he is right.
どんなに反対されても意見を言い続けなさい。
Keep voicing your opinion no matter how much you're opposed.