短语词组短语hammer falteringly 犹豫地锤打write falteringly 犹豫地写spread falteringly 犹豫地散布attempt falteringly 犹豫地尝试add falteringly 颤抖地继续说stumble falteringly 支支吾吾地说falteringly U 口吃地answer falteringly 支吾地回答inject falteringly 犹豫地注入 返回 falteringly