呵呵,韦氏词典对DEEP(adj)的第三条解释:a:diffcult to penetrate or comprehend b:MYSTERIOUS ,OBSCURE c:grave in nature or effect in deepest disgrace d:of penetrating intellect e:intensely engrossed or immersed f:characterized by prfoundity of feeling or quality
第五条解释的a:situated well within the boundaries