用英语介绍企鹅的灭绝原因

An enormous iceberg in Antarctica has killed off 150,000 penguins and threatens to wipe out an entire colony, which has become trapped and unable to reach food.

　　南极洲上一枚巨大的冰山已经导致15万只企鹅死亡，整个栖息地的企鹅都被围困而无法觅食，面临着群体丧生的危险。