4周搞定2000+托福核心词
census = cens(判断) + us(表名词) = 查[人口]→普查
cumulus = cumul(堆积) + us(表名词) = 积云
地峡
isthmus
常考释义
North and South American species migrating across the Isthmus now came into competition with each other.
南、北美洲的物种可以穿越地峡而相互竞争。
来源于：阅读OFFICIAL29 P2n. 地峡；管峡
It was the neck of land which we call the Isthmus of Panama.
这个陆地的狭窄地带，我们称之为巴拿马地峡。
North and South American species migrating across the Isthmus now came into competition with each other.
南、北美洲的物种可以穿越地峡而相互竞争。
来源于：阅读OFFICIAL29 P2Similarly, a creeping glacier may gradually divide a population, or a land bridge such as the Isthmus of Panama may form and separate the marine life in the ocean waters on either side.
类似地，慢慢移动的冰川可能会逐渐将一个种群分开，或者形成像巴拿马地峡这样的大陆桥，将海洋生物隔离在大陆桥的两边水域。
来源于：阅读OFFICIAL42 P1以上图片仅供学习交流使用，版权归原作者所有，如有侵权，请与我方联系
