simple and honest 浑厚;憨厚;为人浑厚;憨厚的;憨实

【例句】
Abrupt, a kind of simple and honest baritone waves to me.
忽然，一种浑厚的男中音向我飘来。

Simple and honest people have a greater capacity for happiness than those who are vain.
朴实的人比虚荣的人更善于体会幸福。