生活是广阔的,我们既要放眼世界,又要关注身边。自古以来,人们对探索生物奥秘就有着浓厚的兴趣。我们的祖先,在同自然界作斗争和进行科学实验的过程中,不断揭示着生物与环境之间的奥秘,积累了许多有关生物环境的知识。 Life is vast. We must not only look at the world but also pay attention to our surroundings. Since ancient times, people have a keen interest in exploring the mysteries of biology. Our ancestors constantly revealed the mystery between biology and the environment in the struggle against nature and scientific experiments, and accumulated a lot of knowledge about the biological environment.