What is a Tornado? - 什么是龙卷风?

关于龙卷风的英语词汇：

1. Tornado：龙卷风
2. Twister：龙卷风
3. Cyclone：气旋
4. Vortex：漩涡
5. Funnel cloud：漏斗云

关于龙卷风的英语作文：

Tornadoes are natural disasters that pose a great threat to people's lives and property. Their occurrence often comes suddenly and can instantly take away countless homes and lives. Faced with tornadoes, we should make preparations, pay attention to weather warning systems, take shelter in time, and protect our safety. At the same time, governments and society should increase support for post-disaster reconstruction efforts, help affected people rebuild their homes as soon as possible, and regain confidence in life.

龙卷风是一种自然灾害，给人们的生活和财产带来了极大的威胁。它的发生往往突如其来，瞬间就能够带走无数的家园和生命。面对龙卷风，我们应该做好预防准备，加强对天气预警系统的关注，及时采取避难措施，保护自己的安全。同时，政府和社会应该加大对灾后重建工作的支持力度，帮助受灾群众早日重建家园，重拾生活的信心。

Tornadoes are extreme weather phenomena, usually accompanied by strong winds and drastic changes in air pressure. Their formation is closely related to powerful convective storm systems and is common in regions with frequent climate changes. The arrival of tornadoes often brings catastrophic destruction and has a profound impact on people's lives. Therefore, we should enhance our understanding of tornadoes, make necessary preparations, and take precautions to minimize potential losses and injuries.

龙卷风是一种极端天气现象，通常伴随着狂风和剧烈的气压变化。它的形成与强大的对流风暴系统密切相关，常见于气候变化频繁的地区。龙卷风的到来往往带来灾难性的破坏，给人们的生活带来极大的影响。因此，我们应该加强对龙卷风的认识，做好防范准备，以减少可能造成的损失和伤害。

What is a Tornado? - 什么是龙卷风？

A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. They are often referred to as twisters, whirlwinds, or cyclones, although the word cyclone is used in meteorology to refer to a weather system, not a tornado.

龙卷风是一种快速旋转的空气柱，它与地球表面和积雨云或在极少数情况下与积云的底部接触。它们通常被称为龙卷风、旋风或气旋，尽管气象学中的“气旋”一词是指一种天气系统，而不是龙卷风。

Formation - 形成

Tornadoes form when warm, humid air collides with cold, dry air. This creates instability in the atmosphere, leading to the development of thunderstorms. If wind patterns are favorable, these thunderstorms can intensify and produce a rotating updraft, which can then develop into a tornado.

龙卷风形成于温暖、潮湿的空气与寒冷、干燥的空气相撞时。这会在大气中造成不稳定，导致雷暴的形成。如果风向有利，这些雷暴就会加剧，并产生旋转上升气流，然后发展成龙卷风。

Characteristics - 特征

Tornadoes are characterized by their rotating, funnel-shaped cloud formations, often extending from the base of a thunderstorm to the ground below. They can vary in size, intensity, and duration, with some tornadoes lasting only a few minutes while others may persist for over an hour. The most intense tornadoes can reach wind speeds of over 300 miles per hour (480 kilometers per hour) and cause significant damage along their path.

龙卷风以它们旋转的漏斗状云形成而闻名，通常从雷暴的底部延伸到地面以下。它们的大小、强度和持续时间各不相同，一些龙卷风只持续几分钟，而其他一些可能持续一个多小时。最强烈的龙卷风风速可达每小时300英里（480公里）以上，并在其路径上造成重大破坏。

Safety - 安全

Tornadoes can be extremely dangerous and pose a significant threat to life and property. It is essential to have a plan in place to seek shelter during a tornado warning. The safest place to be during a tornado is in a basement or an interior room on the lowest level of a sturdy building. If caught outdoors with no shelter available, it is crucial to lie flat in a low-lying area and cover your head to protect against flying debris.

龙卷风可能非常危险，对人身和财产构成重大威胁。在龙卷风警报期间，有一个避难计划是至关重要的。在龙卷风期间最安全的地方是地下室或坚固建筑物最低层的内部房间。如果在户外被困而无避难所可用，则至关重要地平躺在低洼区域，并用头部保护自己免受飞来的碎片的伤害。