①(朗文辞典)The report seeks to relate the rise in crime to an increase in unemployment.报告试图把犯罪率上升和失业增加联系起来。

　　②His remarks didn't relate to the topic under discussion.他说的话与讨论的问题无关。

　　 recognize vt.认识，辨认出；意识到；(正式)承认

　　(教材P9)One explanation is that women's sense of smell is better developed than that of men，and is linked to recognizing the smell of babies.

　　一种解释是：女人的嗅觉比男人的嗅觉发育得更好，且与识别婴儿的体味有关。

　　(1)recognize sb./one's voice　　认出某人/听出某人的声音

　　recognize...as/to be... 承认/公认......是......

　　recognize that... 认识到/承认......

　　It is (generally) recognized that... 人们公认......

　　(2)recognition n. 认出； 认识

　　out of/beyond recognition 认不出来

　　①James Brindley is recognized as one of the leading early canal engineers.詹姆斯·布林德利是公认的一流的早期运河工程师之一。

　　②After 25 years the town center had changed beyond recognition(recognize).25年过去了，市中心变得让人认不出来了。

　　 puzzle n．谜，疑问 vt.迷惑，使困惑

　　(教材P9)However，why pleasant smells do not reduce pain in men remains a puzzle for scientists.

　　然而，为什么令人愉快的气味不能减轻男士的痛苦这对科学家们来说仍然是个谜。

　　(1)puzzle about/over...　　　苦苦思索......

puzzle sth.out 琢磨出......的答案