Micro-burst is a localized extreme weather with strong wind shear. It forms a column of fast-sinking air from storm clouds, spreading horizontally on hitting the ground. It’s short-lived (5-15 minutes) and covers 1-3km in diameter, posing great threats to takeoff and landing aircraft.微下击暴流是一种局地极端天气，包含强风切变。它由风暴云底部产生快速下沉的气流柱，触地后向水平方向扩散；持续时间短（5-15分钟），影响范围直径1-3公里，对起降阶段的飞机构成极大威胁。

Micro-burst threatens flight safety in three phases: approaching it brings strong headwind (increased lift and speed); flying through it causes strong downdraft (altitude loss, even crash); leaving it brings strong tailwind (reduced lift and speed, even stall). It may lead to loss of control, structural damage and fatalities.微下击暴流对飞行安全的威胁分三阶段：接近时遭遇强逆风（升力和速度骤增）；穿越时遭遇强下沉气流（高度骤降，甚至坠机）；脱离时遭遇强顺风（升力和速度骤减，甚至失速），可能导致飞机失控、结构损伤和人员伤亡。

Micro-burst is likely encountered in severe convective weather, such as thunderstorms, CB, or heavy rain showers. It is a localized, short-lived extreme weather with strong downdrafts and wind shear, often forming under intense storm clouds, posing great threats to takeoff and landing phases.微下击暴流易在强对流天气中遇到，如雷暴、积雨云（CB）或强阵雨天气。它是一种局地、短时的极端天气，伴有强下沉气流和风切变，通常在强烈的风暴云下方形成，对起飞和着陆阶段构成极大威胁。

Flying through a micro-burst may cause sudden changes: strong headwind (increased lift/airspeed) when approaching, severe downdraft (altitude loss, even crash) when passing through, and strong tailwind (reduced lift/airspeed, stall) when exiting. It leads to loss of control, endangering flight safety.穿越微下击暴流可能出现突发变化：接近时遭遇强逆风（升力/空速增加），穿越时遭遇强下沉气流（高度骤降，甚至坠毁），脱离时遭遇强顺风（升力/空速降低，可能失速），导致飞机失控，危及飞行安全。