progenitor|progenitors

这台笨重的早期计算机是现代笔记本电脑的雏形。

This bulky early computer was the ___progenitor of modern laptops.

爱因斯坦被认为是量子力学的先驱之一。

Einstein is considered one of the ___progenitors of quantum mechanics.

这位科学家被认为是现代物理学的奠基人。

This scientist is regarded as the ___progenitor of modern physics.