Santa traditionally navigates the frosty night skies December 24th without using a compass or a chart to plot his course.
圣诞老人通常在12月24日寒冷的夜空中航行，而不用罗盘或海图来规划路线。
2
Santa traditionally navigates the frosty night skies on December 24th without using a compass or a chart to plot his course.
圣诞老人通常在12月24日寒冷的夜空中航行，而不用罗盘或地图来规划路线。
3
If you plot this information on a daily chart (like figure 6), you can see if over time the size and number of messages being delivered locally to this DPAR are changing.