Laurasia

 Longman Dictionary of Contemporary English Online朗文当代英语 5++LDOCE Online朗文 5++Lau·ra·sia /lɔːˈreɪʃə $ -ˈreɪʒə/  the very large area of land that existed about 200 million years ago, before it broke apart to form North America, Europe, Asia, and Greenland → see also Gondwanaland, Pangaea

Lau·ra·siaSyllable  

Laurasia
Lau‧ra‧sia /lɔːˈreɪʃə $ -ˈreɪʒə/
the very large area of land that existed about 200 million years ago, before it broke apart to form North America, Europe, Asia, and Greenland ⇨ Gondwanaland, Pangaea

Laur·asiaBrE /lɔːˈreɪʃə/ 🔊NAmE /lɔːˈreɪʃə/ 🔊BrE /lɔːˈreɪʒə/ 🔊NAmE /lɔːˈreɪʒə/ 🔊 noun [singular] (geology 地质学) a very large area of land that existed in the northern hemisphere millions of years ago. It was made up of the present N America, Greenland, Europe and most of Asia. 劳亚古大陆（几百万年前存在于北半球的大片陆地，由如今的北美洲、格陵兰、欧洲和亚洲大部分组成）