smear campaign
collocation抹黑运动；诽谤宣传
The politician claimed the article was part of a smear campaign.
这位政客声称那篇文章是抹黑运动的一部分。
污迹；污点
smears — plural of smear
先理解核心含义，再看它在真实句子里的用法。
污迹；污点
A mark made by smearing something.
There was a smear of paint on his shirt.
他的衬衫上有一道油漆的污迹。
污迹；涂抹痕迹
A mark made by smearing.
诽谤；污蔑
A false or unsupported, malicious statement intended to injure a person's reputation.
涂片(显微镜用)
A preparation to be examined under a microscope, made by spreading a thin layer of a substance (such as blood, bacterial culture) on a slide.
巴氏涂片(宫颈癌筛查)
A Pap smear (screening test for cervical cancer).
She wiped the smear off the window.
她擦掉了窗户上的污迹。
The child had a smear of chocolate on her cheek.
那孩子脸颊上有一块巧克力污迹。
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抹黑运动；诽谤宣传
The politician claimed the article was part of a smear campaign.
这位政客声称那篇文章是抹黑运动的一部分。
巴氏涂片；宫颈抹片检查
It is recommended that women have a regular Pap smear.
建议女性定期做宫颈抹片检查。
血涂片（显微检查用）
The doctor ordered a blood smear to look for abnormal cells.
医生安排做血涂片检查以寻找异常细胞。
油漆污迹
There was a smear of paint across the new carpet.
新地毯上有一道油漆污迹。
抹黑行动，诽谤运动
The rival company ran a smear campaign against us.
对手公司对我们发起了抹黑行动。
玷污某人的名声，诽谤某人
He smeared her reputation with false accusations.
他用不实指控玷污了她的名声。
诽谤伎俩，抹黑手段
The election was marked by bribery and smear tactics.
这次选举充斥着贿赂和诽谤伎俩。
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想象手指蘸墨在纸上横着一抹(smear)留下污迹；同一动作也暗喻“抹黑”别人名誉。
语域：mixed 常见场景：日常对话、新闻文章、体检报告 smear 的含义较多，语域会随具体意思变化。表示“污迹、涂抹痕迹”时比较中性，日常对话和普通书面语都常用；表示“诽谤、污蔑”时多用于新闻或正式讨论；表示“涂片、巴氏涂片”时则出现在医疗或体检语境。通常需要根据上下文判断正式程度。
As a noun, 'smear' often refers to a stain or slander; it is countable.
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.