名词
中文翻译：原形期
同义词：
['primitive stage', 'primitive phase']
例句：
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1.The research on the protophase of human evolution is still ongoing.
关于人类进化的原始阶段的研究表明仍在进行中。
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2. During the protophase, scientists were studying the basic principles of life.
在原型阶段，科学家们正在研究生命的基本原理。
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3. The discovery of this new species has opened up new possibilities for understanding the protophase of evolution.
这一新物种的发现为理解进化的原始阶段开辟了新的可能性。