East to the Atlantic Ocean, extensive trade networks extended from the Great lakes to the Gulf of Mexico.
往东靠近大西洋，广袤的贸易网覆盖了从五大湖到墨西哥海湾。
2
One key finding in the study is that it is not the warming of the ocean alone that reduces cloudiness -- a weakening of the trade winds also appears to play a critical role.
研究中还有一个关键发现就是不仅海洋的变暖会减少云层数量，信风的日益减弱似乎也扮演着关键角色。
3
Easterly trade winds blow from the Indian Ocean over the African continent, losing much of their moisture as they go.