周日黎明最佳观赏猎户座流星雨。
Orionid meteor shower peaks Sunday morni .
例如,每年10月21号我们会经过猎户座流星雨,这就是哈雷彗星残留的陨石屑引起的。
For example , every October twenty-first we pass through the Orionid shower , which is debris left behind from Halley 's comet .