baleen

1. Any of several baleen whales of of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin.
   几种喉部有纵向沟槽且背鳍小而尖的须鲸科长须鲸。
2. However, the position of the eyes so restricts the field of vision in baleen whales that they probably do not have stereoscopic vision.
   但是，由于眼睛的位置太受约束，长须鲸可能没有立体视觉。
3. But it is easier to hear the baleen whale, with its lower-frequency call, than the beaked whales, says Theriault.
   但是，Theriault说，和喙鲸相比，须鲸发出的叫声频率更低，更容易听到它发出的声音。
4. Baleen species, on the other hand, appear to have some related brain structures but it is not known whether these are functional.
   另一方面，鲸须类出现拥有相同的脑结构但是不知道他们是否有用。
5. It was a time when the killer whales, or "killers" as they were then called, helped the whalers catch the baleen whales that were on their annual migration.
   在那个时期，杀人鲸，正如当时他们被称呼的，帮助捕鲸者捕杀在每年迁移途中的须鲸。
6. One group of whales has, instead of teeth, long strips of bone, hanging from their upper jaw. This is the baleen whale, the largest animal in the world.
   有一类鲸鱼，用从上颚骨垂下来的长条状的骨头代替牙齿，它就是须鲸，是世界上最大的动物。
7. Large baleen whales primarily use the lower frequencies and are often limited in their repertoire.
   大长须鲸最初使用低频，他们的全套本领很有限。
8. Killer whales, who live at the top of the ocean food chain, used to prey on sperm and baleen whales.
   虎鲸是在海洋食物链的最高层，它习惯于捕食抹香鲸和须鲸。
9. Baleen traps prey when the whale expels water.
   布赖德鲸通过排出水流就可以捕食猎物。
10. Baleen whales have been tracked by autonomous gliders before, by researchers at Woods Hole Oceanographic Institution, Massachusetts.
    马萨诸塞州的WoodsHoleOceanographic研究的研究员们以前是用自主滑翔器来跟踪须鲸。
11. In combination with some relevant sequences from GenBank, 22 individuals of cetaceans including 13 species of seven families from toothed whales and one species of one family from baleen whales were included in the present analysis.
    结合GenBank检索得到的相关序列，本文涉及的数据包括齿鲸7个科13个种，须鲸1个科1个种共22个个体。

noun

1. a horny material from the upper jaws of certain whales

   Synonym:    whalebone