believable的副詞形式怎么寫

　　例句：

　　This book is full of believable, interesting characters.

　　這本書里充滿了真實可信的有趣人物。

　　Her explanation certainly sounded believable.

　　她的解釋聽起來的確可信。

　　He's made the characters believable.

　　他讓個個角色都逼真可信。

　　This excellent thriller is fast paced and believable.

　　這部優秀的驚悚片節奏快而且令人信服。

　　He always provides a context that makes his characters believable.

　　他總是能夠提供使他的人物形象逼真的背景。