辯 白 biàn bái : offer an explanation; plead innocence; try to defend oneself

辯 解 biàn jiě : explain; justify; defend (a point of view, etc); provide an explanation; try to defend oneself

解 答 jiě dá : answer; explanation

解 釋 jiě shì : explanation; to explain; to interpret; to resolve

說 明 shuō míng : to explain; to illustrate; explanation; directions; caption

在 於 zài yú : (the problem or explanation or advantage etc.) lies in (the fact that...); to lie in; to reside in; to rest in; to depend on