not a bit怎么读，是什么意思，单词翻译、读音

She wasn't a bit worried about the test. 她丝毫不担心考试。

"Are you getting tired?" "Not a bit." “你累了吗？”“一点也不累。”

I wasn't one bit surprised at the news, to be honest.

I don't regret leaving one bit.

"You're not upset about the party, are you?" "No, not a bit - don't worry."

He's not one bit like his brother.