1. As a herpetologist, Dr. Smith spends his time studying reptiles and amphibians.
作为一名爬行动物学家，史密斯博士将其时间花在研究爬行动物上。
2. The herpetologist's research on snake venom has led to important medical advancements.
这位爬行动物学家对蛇毒的研究为医学领域的重要进展做出了贡献。