savanna和savannah的区别是什么?

美国传统词典[双解]

savanna

savanna 也作 sa.van.nah

n.（名词）

A flat grassland of tropical or subtropical

regions.

热带大草原：热带或亚热带地区的平坦草原

剑桥高级学习词典

savannah

savannah, savanna /s?v?n.?/

noun [C or U]

单词英文释义：a large flat area of land covered

with grass, usually with few trees, which is found in hot countries, especially

in Africa