skulls
n. 头骨（skull 的复数）
v. 击中……的头颅（skull 的第三人称单数）
例句
Their skulls show they had no chewing muscles.
它们的头骨显示它们没有咀嚼肌。
Their skulls, pelvises, and hind feet are reptilian.
它们的头骨、骨盆和后脚属于爬行动物。
Perhaps the grossest thing I've done as a naturalist is to boil animal skulls.
也许我作为一个自然学家做过的最恶心的事就是煮动物的头骨。
