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dorsal fin是什么意思？

dorsal fin

脊鳍

相关词汇
dorsal fin

dorsal

adj. 背的， 脊的，背部的，背面的；

fin

n. 鱼鳍，鳍状物，（汽车、飞机、炸弹上的）尾翅，散热片；vt. 给…装上翅片，切除鳍；vi. 潜泳，（猛烈地）拍动（鳍）；
热门例句
He acknowledged publicly that he might have made a mistake.
他当众承认自己可能犯了个错误。
...the spiralling vortex airflow that slows the plane.
使飞机减速的螺旋形气流涡旋
You just go on ahead. I'll come by later...
你只管先往前走。我随后就来。
He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打儿子的,是恨恶他;疼爱儿子的, 趁早管教.
For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。
He sat there while I made the case for his dismissal...
他坐在那儿，听我陈述解雇他的理由。
Baroness Thatcher's claims seem credible to many.
撒切尔女男爵的主张在很多人看来是可信的。
Nothing to be got without pains but poverty.
一份耕耘，一份收获。
This decree obliges unions to delay strikes.
该法令迫使工会推迟罢工。
The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索权当有支付义务的第一方不能支付时，可以向商业票据的背书人要求支付的权力。
相关例句
The first was the domestication of animals.
第一个阶段是驯养动物。
This cat is domestic.
这只猫是驯养的。
Hard work does wonders.
努力工作会取得惊人的成就。
He docked her pocket money until the debt was paid off.
他削减了她的零用钱, 直到还清了债务。
Whatever you do, work hard at it and don't try to dodge the column.
无论做什么事, 都要努力去做, 别偷懒。
The report on our economic situation is full of doom and gloom.
这份关于我们经济状况的报告充满了令人绝望和沮丧的调子。
I did come.
我的确来过。
They formed the dome with the tree's branches.
他们用树枝搭成圆屋顶。
Our country's dominion is very vast.
我国疆域辽阔。
He had a turn of dizziness.
他感到一阵晕眩。
I heard the doorbell ring, and went to see who was there.
我听见门铃响，就去看谁来了。
The boy is a dolt, but we’ll hammer these facts into his dull wits.
这个小男孩是个笨蛋，但我们要强行把这些事灌输进他那迟纯的头脑。
He believes that unemployment is socially divisive and is leading to the creation of an underclass.
他认为失业会造成社会分化，道致贫困阶层的产生。
He was still doggedly pursuing his studies.
他仍然顽强地进行着自己的研究。