all the time, for a long time, much (more/less), continuously
子供の頃からずっと日本のアニメが好きです。
I've liked Japanese anime ever since I was a child.
throughout, all the time, for a long time; far more, by far
彼は子供のころからずっと日本に住んでいる。
He has lived in Japan continuously since he was a child.
always, constantly, from beginning to end, all the time
彼はしじゅう笑顔で、周りを明るくする人だ。
He's always smiling, brightening up those around him.