cirrostratus

• 一种高空薄而均匀的云层，常覆盖天空，有时会在太阳或月亮周围产生晕。

A thin, uniform layer of hazy cloud found at high altitude, often covering the sky and sometimes producing a halo effect around the sun or moon.

1. High-altitude cloud layerC1formalscientific

   A thin, uniform layer of hazy cloud found at high altitudes, often covering the sky and sometimes producing a halo around the sun or moon.

   卷层云

   • The sky was covered by a thin cirrostratus layer, giving the sun a faint halo.
   • Pilots often encounter cirrostratus clouds at cruising altitudes.
   • Cirrostratus clouds can indicate an approaching warm front.