I can't recall the impetus, but I do remember his hangdog expression, conveying the sense that I just didn't understand him.

想不起原因了，但我清楚地记得他一脸沮丧的样子，像是说我根本不理解他。

youdao

I can't recall the impetus, but I do remember his hangdog expression, conveying the sense that I just didn't understand him.

想不起原因了，但我清楚地记得他一脸沮丧的样子，像是说我根本不理解他。

youdao