声音: 声音很重要哦! 优化方案是: 单机时: 全开! 网络对战时: 关音乐, 关环境, 其它都开. 环境音效是指 Ambient Sounds - Ambient Sounds allows you to toggle on/off map-specific sound effects that are part of the environment. Not all maps have such sounds. You will find most of them in single-player campaigns.