英语高手用英语翻译，翻译机免进。回答好的话，我会给追加分！

龙卷风是一种强烈的、小范围的空气涡旋，是在极不稳定天气下由空气强烈对流运动而产生的，由雷暴云底伸展至地面的漏斗状云(龙卷)产生的强烈的旋风.

Tornado is a small range of fierce vortex of air which causes by the violent convection movement of air in extremely instable weather.
It’s a violent cyclone produced by clouds shaped like filler which spreads from the bottom of thunderstorm cloud to the ground.

龙卷的袭击突然而猛烈，产生的风是地面上最强的。在美国，龙卷风每年造成的死亡人数仅次于雷电。它对建筑的破坏也相当严重，经常是毁灭性的。
在强烈龙卷风的袭击下，房子屋顶会像滑翔翼般飞起来。一旦屋顶被卷走后，房子的其他部分也会跟着崩解。因此，建筑房屋时，如果能加强房顶的稳固性，将有助于防止龙卷风过境时造成巨大损失

Tornado attacks abruptly and fiercely, bringing in the strongest wind on the ground. In American, deaths caused by tornado each year are merely less than those by thunder. Moreover, it creates severe damages to the buildings, constantly destructive.

Roof of building will rise up like the wings of gliders under the intense attack of tornado. And once roof is whirled away, the other parts of building will break down as well. Consequently, strengthe