She says it's very worrisome to see such a large number of marine mammals die.
她说如此大数目的海洋动物死亡现象令人担忧。
Oil harms birds and Marine mammals by causing feathers and fur to lose their natural waterproof quality, which causes the animals to drown or die of cold.
原油使鸟类和海洋哺乳动物的羽毛和毛皮失去了自然的防水能力，结果导致动物淹死或冻死。
Oil harms birds and Marine mammals by causing feathers and fur to lose their natural waterproof quality, which causes the animals to drown or die of cold.
原油使鸟类和海洋哺乳动物的羽毛和毛皮失去了自然的防水能力，结果导致动物淹死或冻死。
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