And,even if a child experiences the risks of street life firsthand,like by getting shot .
And,even if a child experiences the risks of street life firsthand,like by getting shot or stabbed,this only reinforces the child's desire for more exposure to the learning of street life,to do better next time by listening more closely to delinquent peers and not to the advice of legitimate authorities.
请教里面的like by getting shot or stabbed这一部分：
like是比如的意思,后面直接跟getting shot不是就可以了吗?为何like后面要加上by,不明白by在此是做什么用的?