Jet Stream 可以多快? 500Km/h 是我猜的,我無意筆戰‧ 不過查了一下Google and Yahoo 其Jet Stream 速度甚至有比500Km/h還來的快‧ 在nasa的某個網頁http://virtualskies.arc.nasa.gov/weather/tutorial/tutorial3.html中提及"Its general motion is from west to east with a speed range of 150 to 300 miles per hour.