diffuse curve造句

There is a small oblique black discoidal spot and a diffused dark postmedial line, as well as an indistinct diffused curved brown subterminal line and a black terminal line.
It is distinguishable from all other " Dahira " species by the almost uniformly black upperside, only the forewing upperside has bluish-grey markings running in a diffuse curved subapical line.
The "'Scutum Centaurus Arm "', also known as "'Scutum-Crux arm "', is a long, diffuse curving streamer of stars, gas and dust that spirals outward from the proximate end of the Milky Way's central Sagittarius and Norma arms.
It's difficult to find diffuse curve in a sentence. 用diffuse curve造句挺难的