名词
中文翻译：颅骨
同义词：
['cranium', 'cranial', 'skull']
例句：
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1.The skull is the first thing that people see when they open their eyes.
当人们睁开眼睛时，最先看到的是颅骨。
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2.Scientists are studying the skulls of ancient humans to learn more about their history.
科学家们正在研究古代人类的颅骨，以了解他们的更多历史。
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3. The skull was found in a cave, and it's believed to be from an early human ancestor.
颅骨在一个洞穴里被发现，据信是来自一个早期人类祖先的。