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| biological index | |||
| biotic index Scale for showing the quality of an environment by indicating the types of organisms present in it (e.g. how clean a river is) (是通过指示目前的生物种类来显示环境质量的一种量度。) | |||
| biotic index | |||
| biologic index | |||
| 生物指数: 73 phrases in 16 subjects |
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