空气对流

例句：

1. 1. The air is rising from the ground due to the convection currents.
   由于对流气流，空气正在上升。
2. 2. The hot air rises and cools down before it reaches the surface.
   热空气上升并冷却到表面。
3. 3. The wind carries the air in a circular motion known as convection.
   风以循环运动的形式带走空气，这被称为对流。