adj.提供消息的；情报的；见闻广博的
The poll cited by the author is too vague to be informative. 由作者引证的民意测验太含糊，不能提供有效的信息。
Man's sense of smell is much less informative than his sight. 人的嗅觉提供的信息远不如视觉。
adj.不提供信息(或资料)的；不增进知识的；不详细的
