cirrus

In addition,a new structure,frontal cirrus between the frontal cilia and laterofrontal cirri,is found only on the gill surface of Corbicula fluminea.

此外，仅在河蚬鳃表前纤毛和前侧纤毛之间，观察到一种新的纤毛结构——前触毛。

Analogous to a sundog or parhelion, the paraselene is produced by moonlight shining through thin, hexagonal-shaped ice crystals in high cirrus clouds.

类似环日的形成一样，在高空卷云中，光通过稀薄、具有六边形状的冰晶时产生。