That's Jan Swammerdam, a  Dutch microscopist from the 1600s.

莫莉：这是 Jan Swammerdam，一位 1600 年代的荷兰显微镜学家。

For the smallest fry these are often rotifers, a phylum of tiny animals discovered in the late 17th century by early microscopists.

最小的鱼苗通常会喂食轮虫，轮虫是17世纪晚期由早期显微镜学家发现的一门微小动物。

These cells were originally named that by early microscopists, who noticed that emanating from one end of the cell was a little cluster of bristles.

早期的显微镜学家发现，这些细胞的一端长有一小撮纤毛，毛细胞的名字便由此而来。