n. the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist
n. 生物圈
[医] 生物圈, 生物层
1. The biosphere is essential for all living organisms on Earth.
生物圈对地球上所有生物都是必不可少的。
2. Scientists study the biosphere to understand how ecosystems function.
科学家研究生物圈以了解生态系统是如何运作的。
3. Pollution can harm the biosphere and threaten wildlife.
污染会损害生物圈，威胁野生动物。