Sorry, perhaps I did not make that quite clear.
對不起,也許是我沒有說清楚。
Sorry, perhaps I did not fully explain that.
抱歉,也許我對這個問題的解釋不夠充分。
Sorry, perhaps I did not explain fully enough to make you understand.
抱歉,也許是我解釋充分,所以沒能讓大家理解。
Sorry, perhaps my explanation was not good enough to make you understand.
抱歉,也許是我的解釋不到位,所以沒有讓大家理解。