求翻译：中科院水生生物研究所研究员王克雄表示，航运、采砂、非法捕捞、气候突变、水污染等都是导致江豚死亡的原因是什么意思？

Wang Kexiong researcher at the Institute of Biology of the Institute of Hydrobiology, shipping, sand mining, illegal fishing, abrupt climate change, water pollution are the finless porpoise deaths

Aquatic life sciences, research fellow at the Institute, said Wang shipping, sand mining, illegal fishing, climate changes, water pollution, river dolphins are the cause of the causes of death

Academia Sinica Aquatic Biology Research institute Researcher Wang Ke the male expression, the shipping, picks the granulated substance, illegal fishing for, the climate changes suddenly, the water pollution and so on all is causes the black finless porpoise death the reason

Institute of Hydrobiology, Chinese Academy of Sciences Wang Kexiong said sand excavation, illegal fishing, shipping, abrupt climate change, water pollution, and so is the finless porpoise's cause of death

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