unit12单词（音标）
camp [kæmp] v.扎营;搭帐篷
lake [le?k] n.湖;湖泊
beach [bi?t?] n.海滩;沙滩
badminton [?bædm?nt?n] n.羽毛球运动
sheep [?i?p] n.羊;绵羊
as [æz] prep.&adv.作为;当作
natural ['næt??r?l] adj.自然的
butterfly [?b?t?fla?] n.蝴蝶
visitor ['v?z?t?] n.游客;访问者
tired ['ta??d] adj.疲倦的;疲劳的
stay [ste?] v.停留;待
