原始，原型，原始的

Proto" is derived from the Greek word "protos," meaning first or primitive.
“Proto”源自希腊语单词“protos”，意为第一或原始。

The Proto-Indo-European language is believed to be the common ancestor of most languages in Europe and India.
原始印欧语被认为是欧洲和印度大多数语言的共同祖先。

The proto-star is the early stage of a star's life cycle, before it has fully formed.
原恒星是恒星生命周期的早期阶段，在其完全形成之前。

Protozoa are single-celled organisms that can move independently and carry out all their life functions.
原生动物是一类单细胞生物，可以独立移动并执行所有生命功能。

The proto-type of the new car will be on display at the auto show next month.
新款汽车的原型将在下个月的车展上展出。

The ancient civilization had a proto-democratic system where citizens could vote on major decisions.
古代文明有一种原始民主制度，公民可以对重大决策进行投票。

The proto-language of the Americas may have been spoken by a group of people who migrated across the Bering Strait.
美洲的原始语言可能是通过白令海峡迁徙的一群人所说的。

The proto-bird Archaeopteryx had feathers and wings like modern birds but also had teeth and a long bony tail.
原始鸟类始祖鸟拥有与现代鸟类相似的羽毛和翅膀，但也长有牙齿和一条长长的骨质尾巴。

The company is still in its proto-phase, so there are many bugs in the software.
该公司仍处于原型阶段，因此软件中存在许多错误。

The protohistoric period refers to the time when written records begin but are not yet complete.
原史时期指的是书面记录开始但尚未完成的时间。