下世纪中期，人口每年增长将向公元元年后的第一个1500年那个多。

By the middle of next century population will expand every year by as much as it did in the first 1500 years after Christ.

youdao

开采煤始于西汉文帝前元元年（公元前179年）左右；

Mining of coal came into being in 179 B. C.

youdao

开采煤始于西汉文帝前元元年（公元前179年）左右；

Mining of coal came into being in 179 B. C.

youdao