... 存在机率 existence probability 实存母体existent population 外生因素 exogenous factor ...
双语例句
1
Matters are even worse in the desert West and lowland South, where population growth has been so rapid that basic infrastructure is often non-existent.
西部沙漠区和南部低地区的情况更糟,那里人口增长过快,往往看不见什么基础设施。
2
But the problems of the vegetation without reason, the serious pollution, the population explosion and the environment breach in the marsh are existent.
但尚存在植被开发利用不合理、污染严重、人口激增、环境被破坏等问题。
3
With this background, loneliness became the existent state of everyone, especially the urban population which cannot escape.