biology

In our biology class, we used microscopes to observe the movement of single-celled organisms.

(Chinese) 在生物课上，我们用显微镜观察单细胞生物的运动。

Marine biology focuses on the study of life forms living in oceans and other saltwater environments.

(Chinese) 海洋生物学专注于研究生活在海洋及其他咸水环境中的生命形式。