邻家男孩笑容温暖，总是带来欢声笑语。余弦函数的单调区间

　　Sheen and Caulfield are Bo and Roy, respectively, two California high school grads who vent their frustrations by going on a killing spree. In a hard-hitting, semidocumentary-like style, the film examines the damaged psyches of these two killers as they wend their way throughout Los Angeles randomly choosing and then murdering their victims. The murder scenes are especially bru... (展开全部)