In response to simpson ' s assertion , alan boyden of rutgers university and a colleague applied the technique to the whale question 为了回应辛普森的断语,美国路特格大学的波依顿与一位同事将这个技术应用到鲸豚问题上。
The team had discovered the oldest and most primitive whale then known ? one that must have spent some , if not most , of its time on land 金格瑞西团队发现的是最古老、最原始的鲸豚,当年?必然要在陆地消磨一些时间;大部分时间都待在陆上也说不定。
Lacking fur and hind limbs and unable to go ashore for so much as a sip of freshwater , living cetaceans represent a dramatic departure from the mammalian norm 现生的鲸豚类没有毛发、后肢,连上岸喝一口水都办不到,与一般的哺乳类有很大的差异。
Calling them “ on the whole , the most peculiar and aberrant of mammals , ” he inserted cetaceans arbitrarily among the other orders 他认为鲸豚整体而言,是最奇异、最歧出的哺乳类,并为?们单独设立了鲸目,与其他目并列于哺乳纲中,不特别交代?们的来历。
But to 19th - century naturalists such as charles darwin , these air - breathing , warm - blooded animals that nurse their young with milk distinctly grouped with mammals 但是对19世纪的博物学家,像是达尔文,鲸豚是呼吸空气的温血动物,并以乳汁抚育幼儿,当然属于哺乳类。
Japan ' s stock of whale meat from hunting for scientific research is so large that the country has begun selling it as dog food , a leading marine conservation organisation said on friday 世界鲸豚保护学会日前指出,日本已将以科研名义捕杀的大量鲸鱼肉制作成狗食出售。
" whaling is a cruel activity and the fact that japan is killing these amazing animals to produce dog food is shocking , " said wdcs science director mark simmonds 鲸豚保护学会的科学主管马克西蒙德说: “捕鲸本身就是一种残忍的行为,而日本捕杀这种珍贵的动物用来制成狗食的事实更令人震惊。 ”
Although the fossil skull lacked the anatomy necessary for hearing directionally in water ( a critical skill for living whales ) , it clearly had the diagnostic cetacean ear traits 虽然那个化石头骨缺少在水中听方位(现生鲸豚不可或缺的本领)所需的构造,却有鲸豚类特有的耳朵特徵,一点都不含糊。
Whale watching , boating , diving , rafting , sea fishing , surfing , canoeing , sailing , windsurfing , and beach activities . air - sports : ultra light , flying , parasailing , hand - gliding , and hot - air ballooning 水域活动:水上户外活动包括赏鲸豚游艇潜水泛舟钓鱼船钓冲浪独木舟帆船风浪板与海水浴场等活动。