plumaceous造句

例句与造句

1. Two types of simpler, downy ( plumaceous ) feathers covered the rest of the body, as in " Sinornithosaurus ".
2. A study describing the fossils in 2012 concluded that " O . edmontonicus " was covered in plumaceous feathers at all growth stages, and that only adults had pennaceous wing-like structures, suggesting that wings may have evolved for mating displays.
3. It's difficult to find plumaceous in a sentence. 用plumaceous造句挺难的