The great speed and force of tornado winds can pick up things as heavy as automobiles and hurl them hundreds of yards. (4) The updraft causes a very low air pressure within the funnel.

龙卷风的速度快，力量大，能卷起像汽车那样的重物，把它们抛到几百码以外。上升的气流，在龙卷风的漏斗中引起低气压。

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The hardest hit area is a 3)swath of the great plains from Texas to South Dakota, known as "Tornado 4)Alley."

受灾最严重的地区是从德克萨斯州到南达科他州之间的大平原带，该地区被称为“龙卷风走廊”。

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But the deaths of three respected researchers near Oklahoma City have renewed questions over whether the risk of dashing off into violent storms in Tornado Alley is too great regardless of the adrenaline rush.

NPR: Storm Chasing Critical, Profitable And Dangerous