They sprawled in lawn chairs, snoozing.他们手脚张开地躺在草地躺椅上,打着呼噜。My brother was snoozing on the sofa.我弟弟正在沙发上打盹。He was snoozing by the table.他在桌子旁打瞌睡.They sprawled in lawn chairs, snoozing...他们手脚张开地躺在草地躺椅上,打着呼噜。...
Keywords: ahazard potency of debris flow, externality, cost - benefit analysis.关键词: 土石流特定水土保持区 、 外部性 、 成本效益 分析.Pollution is considered as a form of negative externality in economic growth.摘要环境污染是经济增长过程中的“负产品”.The damage ...