dark disc的用法和样例：
例句
- In the center, the three huge dark dust lanes that give the Trifid its name all come together.
在星云中央，三道巨大的尘埃暗带会聚在一起，使这个星云以三裂星云为名。
dark disc的相关资料：
临近单词
darkly
dark
dark operation in open tunnel
dark-colored femic minerals
darkroom for film development
Dark clouds were gathering.
dark object subtraction model
Darkness closed in upon us.
Dark hair and ruddy complexion
Dark clouds betoken a storm.
Dark learning in Weijin period
dark field illumination method
