“海脊”造句

大西洋洋底在中部形成由北向南的海脊.
The floor of the Atlantic ridges in the middle from north to south.

一道中海脊是板块之间的边界,在那里新的岩石圈的物质从下部注入.
A mid - ocean ridge a boundary between plates where new lithospheric material is injected from below s.