Depopulation
[经] 人口下降
📖 牛津释义
depopulation
n[U].
🗣️ 情景例句
Yes, come on.
是的， 过来。
San Diego. I got back yesterday.
圣地亚哥，我昨天才回来。
Historians have long been puzzled by dots, lines and symbols which have been engraved on walls, bones, and the ivory tusks of mammoths.
长期以来，历史学家一直对雕刻在墙壁上、骨头上、古代长毛象的象牙上的点、线和形形色色的符号感到困惑不解。