瓦登关键词检索结果

“瓦登海的保护仍需进一步加强”

'Protection of the Wadden Sea still needs to be made much better'

海豹似乎正在荷兰海岸消失。这些科学家正试图查明神秘失踪事件的真相

Seals Are Seemingly Vanishing Off the Dutch Coast. These Scientists Are Trying to Get to the Bottom of the Mysterious Disappearances

最近对瓦登海成年斑海豹数量的统计显示出令人惊讶的下降趋势,促使研究人员联盟调查这些动物是否正在死亡、迁移或完全经历其他情况