用英语介绍海豚?
用英语这样介绍海豚
Dolphins live in groups,and speak to each other in their own language.That is a high sound and many singers love to learn this beautiful “song”.Their sound seems to have different functions,such as warning each other of danger or showing kindness to others. Dolphins also use sound to help them find their way around, and to help them find food. In this way they are like other animals,such as bees and birds.But dolphins are very different from almost all land animals. We now know they do not use their ears to receive their sounds,but the lower part of the mouth,called the jaw.Dolphins have bigger brain in proportion to their body size than humans have and they live a long life—at least 20 or 30 years.
海豚和江豚有什么区别?
两者最大的不同是分类位置,江豚属于鼠海豚,跟海豚分属两个不同的科。外观上最明显的区别是江豚没有背鳍,所以其英文名叫 finless porpoise,直译就是无鳍鼠海豚。还有一个别名露脊鼠海豚,描述的也是这一特征。
感觉就是海豚的样子呀
海豚,通常情况下是一个很宽泛的叫法,所包含的物种相当多,即使是在下级的分类单元(属及以下)里,彼此之间的差异也是相当大的。
目前带有这一名字的分类单元里最大的是海豚超科,包含了三个现生科(虽然是现生为主,但也包含了一些灭绝属)和三个灭绝科。三个现生科分别是海豚科,鼠海豚科和一角鲸科。
海豚科,按目前已知的大致分为十几个现生属和近十个灭绝属。按形态差异、亲缘远近等因素,其中大部分又归类为五个亚科:海豚亚科、圆头鲸亚科、虎鲸亚科、露脊海豚亚科和糙齿海豚亚科。
现生海豚亚科下有五个属:海豚属(或叫真海豚属)Delphinus、驼背海豚属Sousa、细吻海豚属Stenella、瓶鼻海豚属Tursiops和弗氏海豚Lagenodelphis hosei。
广义上的海豚,一般指的是海豚科。在一些文章里,如果结合上下文,“海豚”甚至会用来指代海豚超科。狭义的海豚,则仅指真海豚属。而一般理解里的海豚,或者普通印象里的海豚,又或网上图片搜索海豚二字出来的结果,则相当大部分都是瓶鼻海豚。瓶鼻海豚和真海豚,两者从外观到颜色,都是明显不同的。只不过瓶鼻海豚是水族馆表演里最常见的,于是便取代了真海豚而拥有了海豚之名。
到此,以上就是小编对于海豚 英语的问题就介绍到这了,希望介绍关于海豚 英语的2点解答对大家有用。