嗯...我觉得这个答案不太对。

___Hmmmm, I don't think this answer is quite right.

“嗯...”他皱着眉头思考了一会儿，“我不确定这个答案是否正确。”

"___Hmmmm," he frowned for a moment, "I'm not sure if this answer is correct."

嗯，我从来没想过可以这样解决这个问题。

___Hmmmm, I never thought about solving the problem this way.