During the summer the jet stream (air currents at 7, 000-12, 000m above sea level which affect the winds and weather) changed its course.

夏季，急流(海拔在7,000 - 12,000米的气流，影响风和天气)改变了航向。

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Back in 1996, Haigh showed that the temperature of the stratosphere influences the passage of the jet stream, the high-altitude river of air passing from west to east across Europe.

1996年，Haigh指出，平流层的温度影响了喷流的一段，而喷流是横跨欧洲自西向东的一条高海拔气流通道。

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As a high velocity air jet, it supports and straightens the primary air stream and thus prevents slagging on the furnace walls.

作为一股高速射流，它对一次风气流起支撑作用，以防止炉壁结渣现象的发生。

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This is the so-called jet stream, the fast river of air that helps drive our weather, which interacts with the storm's updrafts to create a spinning column of air.

CNN: The making of a nightmare tornado

The explanation for this lies with the "jet stream" - a ribbon of fast-moving air, up in the atmosphere.

BBC: Scotland's summer of two halves