- primary support group
- 基本: basic; fundamental
- 的: 4次方是 The fourth power of 2 i ...
- 支持: sustain; hold out; bear
- 群体: population; colony group
- 基本的: 48) elementary; basal; base; basic sgml document; bedrock; cardinal; constitutional; electric; essential; foundational; frndamental; fundamental fundamental; main; net; primary; primitive; principal; radical; rudimental; ultimate
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