I once had a young guy who was a third-year marinebiology student at a large state school in Ohio.
我曾经遇到过一个年轻人，他是俄亥俄州一所大型州立学校海洋生物学三年级的学生。
2
I am pretty sure those other students are doing the internship at the center's aquarium, taking classes in marinebiology and then teaching visitors about the various displays.
我很确定其他的学生在中心的水族馆实习，上海洋生物学课，然后向游客讲解各种各样的展览品。
3
Listen to part of a lecture in a MarineBiology class.