an act that brings discredit to the person who does it;
"he made a huge blot on his copybook"
Verb
smear so as to make dirty or stained
charge falsely or with malicious intent; attack the good name and reputation of someone;
"The journalists have defamed me!" "The article in the paper sullied my reputation"
例句
This eradicator can wipe off hard washing smirch. 这种去污剂能去除难洗的污渍。
This action smirch the true meaning of love . Maybe everyone has the different view about this,this is juts my view. 这种行为真的沾污了爱情真正的意义;也许每个人对待这方面的看法都不一样;这只是我的看法.
Despite its unavoidable pity and smirch due to historical limitations, its unigue comments played a vital part in strengthening its status in media. 虽然该报无法回避历史局限性带来的遗憾和污点，但其独有的评述特点，对巩固其在当时新闻媒体中的地位起到了一定作用。
Drakowen stood above the fallen Ardan, an evil smirch across his now malformed face. 德拉科文站在倒下的阿登之上，他难看的脸上显示出恶魔的污迹。
The compound material of resin matrix may produce serious smirch phenomenon during the minute hole drilling. 以树脂为基体的复合材料在微孔加工中会产生严重污斑现象。
For a while Dr.Thrax was using the Smirch MLRS, though armed with lethal destructive power, Dr.Thrax was not satisfied with its clumsiness, as it did not fit in with his guerilla tactics. 有一段时间，拉克斯博士采用污染者多管火箭炮系统，污染者火箭炮能够带来致命的破坏力，但博士不满于它的笨重，因为它不符合博士的游击战术。
