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The unusually high mortality rate among dolphin calves in the industrially contaminated waters along Florida's Gulf Coast is probably the result of their being poisoned by their mother's milk.

在佛罗里达海湾沿岸被工业污染的水域中，海豚幼崽异常高的死亡率可能是被它们母亲的乳汁毒害的结果。

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In an urban population with good access to professional care, we found a high neonatal mortality rate, often due to preventable conditions.

在可获得专业护理的城区人群中，新生儿死亡率高通常与预防条件有关。

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Novy-Hildesley explains, the doctor faced a high rate of infant mortality in the clinic.

VOA: standard.2009.12.18

People with serious illnesses (and substance use disorders have a high mortality rate) are vulnerable.

FORBES: Addiction And Ethics: The Problem With Dr. Drew's 'Rehab'

Part of the reason for the high mortality rate is that lung cancer is notoriously difficult to identify early.

FORBES: How Dogs Beat Doctors in Identifying Early-Stage Lung Cancer

Fish health inspectors visited Seasalter Shellfish in the town after the producer reported a high mortality rate in its Pacific oyster stocks.

BBC: Movement ban after virus is found in Kent oyster stocks