搜索趋势 · 07/04 06:00Google Trends 美国washington dc extreme heat wave原始链接 来源页 规则降级解读信号Google Trends 美国 出现上升信号，当前热度标记为 200000+。解读已有 3 条关联来源，适合先定位触发事件，再判断是否扩散到更大人群。边界Google Trends 表示搜索兴趣上升，不等于绝对搜索量、事实真伪或长期需求。相关来源CNN‘Extremely high’ rates of heat-related ER visits, CDC says, with more coming SaturdayThe Weather ChannelExtreme heat dome sizzles NYC, Philadelphia, Boston, DC into July Fourth weekendCBS NewsDangerous heat, severe thunderstorms expected through 4th of July in Maryland