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[iɡˈnɔ:]

vt. 不理睬,忽视,[律](因证据不足而)驳回诉讼

来源于拉丁语否定前缀i-和基本动词gnor·are(知道)的复合动词i·gnor·are(不知道)。

拆分: in-不,无→n脱落→i-不,无 + -gnor-知道 + -e动词词尾      

搭配:
be widely ignored 被普遍忽视
ignore sth at your peril  忽略要自担风险: 
ignore the fact that ...  忽略的事实:
sth. can be safely ignored (讥讽的)完全不用理会某事

例:
to ignore a warning 不理会警告
to ignore your friends 不理睬朋友 
Safety standards are widely ignored in the industry. 安全标准在该行业中被普遍忽视。 
The pernicious effect of this advertising on children is a problem that we ignore at our peril. 这则广告将对孩子有潜移默化的坏影响,我们置之不理,风险将由我们自己来承担。 
Did you think I’d ignore the fact that you were suffering from shock?  你受了惊吓,你以为我会置之不理吗? 
These people occupy such a marginal position in society that the authorities think they can be safely ignored. 这些人处于社会的边缘,当局认为完全不用理会他们。