voice [v3is] n.说话声;声音
slowly ['sl4uli] adv.慢地;缓慢地
sentence ['sent4ns] n.句子
enjoy doing 喜欢做……;乐于做……
laugh at 笑话;取笑(某人)
excited [ik'saitid] adj.激动的;兴奋的
secret ['si:krit] n.秘密
quickly ['kwikli]