A-30: at heart 本质上的

A：Ben always appears rude to the people around him.

A: 本总是以周围的人表现得很无礼。

B: But he's really kind at heart.

B：可他事实上是个很善良的人。

A: That's true. We can't judge people by appearance.

A：是的，我们不能从外表来判断人。