n. 人口, 人口数
They have determined that the Industrial Revolution had an overall positive , but it quite possibly was neutralized by negative events such as wars, high taxes, and rapid population growth.
四级 · CET-4 2026年6月 第1套 · Part III 选词填空
Organic farmers never used neonics, the controversial pesticides that have been linked to shrinking bee populations worldwide.
四级 · CET-4 2026年6月 第1套 · Part III 第46–50题
That number will only grow as the continent's population hits 2.5 billion people by 2050.
六级 · CET-6 2026年6月 第3套 · Part III 第51–55题
But the new research suggests that a “modest degree of discomfort and fragmentation” may actually help preserve panda populations.
四级 · CET-4 2025年6月 第1套 · Part III 第46–50题
For their study — outlined in a paper in the journal Conservation Biology — the team looked at genetic diversity and spread among a Chinese panda population.
四级 · CET-4 2025年6月 第1套 · Part III 第46–50题