每个父母都会担心自己的孩子，所以他们教孩子们很多东西，以防他们会遇到坏人。

Every parent will worry about their children, so they teach the children many things, just in case they will meet the bad guy. My mother always tells me not to talk to the strangers or accept the food from them, or I may never see them again. I keep her words in mind, so I can avoid the potential dangers. 
每个父母都会担心自己的孩子，所以他们教孩子们很多东西，以防他们会遇到坏人。我的妈妈总是告诉我不要跟陌生人说话或接受他们的食物，否则我可能再也见不到他们了。我记住她的话，因此我可以避免潜在的危险。