Pachycephalosaurus has a big, thick dome on its head, and it's got some little bumps on the back of its head, and it's got a bunch of gnarly things on the end of its nose.
パキケファロサウルスの頭には大きくて厚い ドームがあり 後頭部には小突起があります そして鼻の先には多くのコブがあります