当上升气流与能形成风暴的湿热空气变成高死锬旋风时，就形成了龙卷风。
Tornadoes form when the updrafts of air that supply storms with warm humid air become a vortex or high-speed whirlwind.
里面有约翰·肯尼迪被刺的幕后真相，也有水门输塔的渌音带神秘失桌锬那己分钟，当然，还有51区。
The truth behind the JFK conspiracy. The missing minutes from the Watergate tapes. And of course Area 51.
里面有约翰·肯尼迪被刺的幕后真相，也有水门输塔的渌音带神秘失桌锬那己分钟，当然，还有51区。
The truth behind the JFK conspiracy. The missing minutes from the Watergate tapes. And of course Area 51.
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