Big heart → 好心

拥有“big heart”意味着非常慷慨和关心他人。

The 100, Season 4 Episode 13

Big heart (phrase) - a kind and generous disposition.

同义词: thoughtful, kind

He is a good friend because he has such a big heart. → 他是一个很好的朋友，因为他心很好。

She is really big-hearted. → 她的心非常好。

One Big Heart: A Celebration of Being More Alike than Different by Linsey Davis

“But the way we’re most alike… the MOST IMPORTANT PART? God gave us all a special gift-- We each have… one BIG heart.”