drift term

例句：

1. 1. The study of climate change is a crucial field in the drift term.
   气候变化研究是漂移期的一个关键领域。
2. 2.The drift term is often associated with the rise and fall of species.
   漂移期通常与物种的兴衰相关联。
3. 3.During the drift term, scientists were trying to understand the impact of human activities on the environment.
   在漂移期，科学家们试图理解人类活动对环境的影响。