A four-year-old Chicago boy is dead and two Rottweilers and a poodle have been euthanized .One or more of the dogs mauled the boy to death in his backyard on Sunday.是什么意思_A four-year-old Chicago boy is dead and two Rottweilers and a poodle have been euthanized .One or more of the dogs mauled the boy to death in his backyard on Sunday.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句