有哪位知道“Poster Children”在口语中是什么意思?我猜是“负面报道”的意思,

在一个慈善团体招贴刊物海报上的小孩;作为范例的人或物
中文
1、A child who appears on a poster as a member of a group benefitted by a charitable organization:
典范儿童,代言儿童：身为慈善团体所赞助对象之一而出现在宣传海报中的孩童：
a poster child for muscular distrophy.
肌肉萎缩症的代言儿童
2、A person who is a prominent example or type of something:
典型人物,典型代表：成为某种事情的显著例子或类型的人：
“He was a living poster child for the evil potential of inherited wealth”(Jim Harrison)
“他就是受继承财产负面影响的活生生例子”(吉姆·哈里森)
英文：
1、A child who appears on a poster as a member of a group benefitted by a charitable organization:a poster child for muscular distrophy.
2、A person who is a prominent example or type of something:“He was a living poster child for the evil potential of inherited wealth” (Jim Harrison).