直立人

Erectus inhabited Africa and Asia about 1.8 million years ago.
翻译：直立人约在180万年前居住在非洲和亚洲。
The discovery of Homo erectus fossils provided crucial evidence for human evolution.
翻译：直立人的化石发现为人类进化提供了关键证据。
Early Homo erectus used crude stone tools for hunting and processing food.
翻译：早期的直立人使用粗糙的石器进行狩猎和食物加工。
They speculate that Homo erectus had a brain capacity similar to ours.
猜测认为直立人的大脑容量与我们相似。
The Homo erectus migration theory suggests they spread across the globe.
翻译：直立人的迁徙理论认为他们遍布全球。
Fossilized footprints of Homo erectus have been found in Java, Indonesia.
翻译：在印度尼西亚爪哇发现了直立人的脚印化石。
Homo erectus is believed to have lived in social groups, not solitary individuals.
据信直立人生活在社会群体中，而非孤独个体。
The extinction of Homo erectus remains a subject of scientific debate.
翻译：直立人的灭绝仍然是科学讨论的主题。
Comparative studies on Homo erectus skeletons reveal their physical adaptations.
翻译：对直立人骨骼的研究揭示了他们的身体适应性。
Recent discoveries challenge our understanding of how Homo erectus survived in harsh environments.
最新的发现挑战了我们对直立人如何在严酷环境中生存的理解。