- human reproduction & development
- 人类: human; mankind; humanity
- 繁衍: multiply; increase gradually ...
- 和: mix; blend
- 发展: develop; expand; grow; burge ...
- 繁衍: [书面语] (逐渐增加或增广) multiply; increase gradually in number or quantity 自古以来, 我们的祖先就劳动、生息、繁衍在这块土地上。 from ancient times our forefathers have laboured, lived and multiplied on this land
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