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其中，长脊冠网蝽对滇润楠的危害率及危害指数最高，白脉病次之。
The maxims of damage rate and damage index were caused by Stephantitis svenson, and the second by white vein disease.
比较了感染率的季节性波动和对 Corbicula fluminea 的危害。
The seasonal fluctuations about infectation percentage and the harm on the Corbicula fluminea were compared.
我们知道，综合性的减少危害规划减少了危险的药物注射做法，也导致艾滋病毒感染率降低。
We know that comprehensive harm reduction programmes reduce risky drug injecting practice and result in declines in HIV infection rates.
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