From an analysis of the hot-spot population it appears that the African plate is stationary and that it has not moved during the past 30 million years.
从对热点人口的分析来看，非洲板块似乎是静止的，在过去的3000万年里它没有移动过。
2
From an analysis of the hot-spot population it appears that the African plate is stationary and that it has not moved during the past 30 million years.
从对热点人口的分析来看，非洲板块似乎是静止的，在过去的3000万年里它没有移动过。
3
Replacement rate — The level of total fertility that is compatible with a stationarypopulation.