protolog

例句：

1. 1. The protolog of the species is crucial for understanding its evolution.
   物种的原型对于理解其进化至关重要。
2. 2.In archaeology, the protolog is often used to describe the earliest form of a particular object or culture.
   在考古学中，原型通常用来描述某一特定物品或文化的最早期形态。
3. 3.The protolog of the language was discovered in the 19th century, marking a significant milestone in the study of language development.
   语言的原型是在19世纪被发现的，这标志着研究语言发展的一个重要里程碑。