adj.提供消息的；情報(bào)的；見(jiàn)聞廣博的

The poll cited by the author is too vague to be informative. 由作者引證的民意測(cè)驗(yàn)太含糊，不能提供有效的信息。

Man's sense of smell is much less informative than his sight. 人的嗅覺(jué)提供的信息遠(yuǎn)不如視覺(jué)。

It will be most interesting and informative to hear Mr. Smith. 屆時(shí)能聆聽(tīng)到史密斯先生演講，定會(huì)是極為有趣和增長(zhǎng)見(jiàn)識(shí)的。