- 背景: background; backdrop; settin ...
- 因子: divisor; factor; determiner; ...
- 背景因素: contextual factor
- 背景: (布景; 衬托主体事物的景物; 对人物、事件起作用的历史条件或现实环境) background; backdrop; setting 历史背景 historical background; historical setting; 时代背景 background characteristic of times; 舞台背景 stage background; 英语学习背景 cultural background for english study
- 卵石当景因素: gravel equivalent factor
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