But the overgrowth of population presents a threat to the existence of human society.
But the overgrowth of population presents a threat to the existence of human society.
但是，人口过分增长对人类社会的存在构成了威胁。
But the overgrowth of population presents a threat to the existence of human society.
但是，人口过分增长对人类社会的存在构成了威胁。