棘字的意思

海水和淡水棘鱼可以在接触区杂交。

Marine and freshwater stickleback can hybridize in contact zones.

棘龙的牙齿和霸王龙的牙齿完全不同。

Spinosaurus teeth and tyrannosaurus teeth were completely different.

对于棘龙来说，饮食只是进化的冰山一角。

As for spinosaurus, diet was just the tip of the evolutionary iceberg.

一只棘冠海星每年可以吃掉5到6平方米的珊瑚虫。

A single Acanthaster can consume five to six square meters of coral polyps per year.

57英尺长，9吨重，棘龙在大约1亿年前的白垩纪早期就开始四处活动。

Fifty-seven feet long and up to nine tons, spinosaurus started poking his head around the early Cretaceous some 100 million years ago.

通过土地利用活动对珊瑚的破坏会导致以棘星幼虫为食的捕食者数量减少。

The destruction of coral through land use activities would cause a decrease in the number of predators that feed on Acanthaster larvae.

棘冠海星很大，直径长达25到35厘米，有7到21条手臂，上面布满了刺。

The crown of thorns starfish is large, twenty-five to thirty-five centimeters in diameter, and has seven to twenty-one arms that are covered in spines.

对一个有十条鲜活的棘鱼鱼群的初步研究显示，他们确实和那条机器鱼混在了一起。

A preliminary study of a shoal of ten flesh-and-blood sticklebacks shows that they do indeed mingle with therobot.

很难理解捕食减少是如何导致在特定年份的同一时间内，几个地方的棘冠海星数量突然增加。

It is difficult to understand how reduced predation would lead to sudden increases in Acanthaster numbers in several places at the same time in specific years.

棘螈是一种原始鱼类，它的化石遗迹显示，尽管棘螈有基本的四肢，但它却不能在陆地上行走。

Fossilized remains of Acanthostega, a primitive fish, reveal that even though the animal had rudimentary limbs, it could not walk on land.

他们究竟填补了哪些进化中的生态位有待讨论，主要是因为在过去50年里没有人见过棘龙的骨骼。

Just what evolutionary niche they filled is up for debate, largely because no one has seen a spinosaurus skeleton for the last 50 years.

还有人认为，捕捞棘冠海星的脊椎动物和无脊椎动物捕食者可以降低死亡率、增加成年个体的数量。

Others have suggested that the harvesting of vertebrate and invertebrate predators of Acanthaster could have reduced mortality and caused increased abundance of adults.

分别利用标本切片与CT图像对照，对外耳道上棘进行观察。

Suprameatal spine was identified on anatomic slices and CT images respectively.

分别在解剖切片和CT图像上鉴定出翅缰和上棘。

Ponticulus and supramental spine were identified on anatomic slices and CT images respectively.

验证每月除虫对所有犬粒棘球绦虫感染控制的应用及效果。

Verify the application and effectiveness of monthly deworming for all dogs in the control of Echinococcus granulosus infection.

他的观点将会棘突主流的历史学家。

His view will infuriate mainstream historians.

要有勇气。你拥有披荆斩棘的勇气。

It takes courage.But you possess the inner courage to see you through.

海胆在海峡群岛附近的海底挥舞着它们的棘突。

Sea urchins brandish their spines on the seafloor near the Channel Islands.

原来是管道水泥壁上突出的一个棘螺栓。

A jagged bolt protrudes from the concrete walls of the tunnel.

棘蜴最多可以存活20年并且只吃蚂蚁。

Thorny Devils can live for up to 20 years and feed exclusively on ants.

每根棘突尖端蓝色膨胀部位都盛满了毒液。

The blue swellings on the tip of each spine are filled with venom.

进取心可以厘清一切，披荆斩棘直捣演化的精髓。

Enterprise clarifies, cuts through, and captures, the essence of the evolutionary spirit.

他开始披荆斩棘，但是他宝剑所到之处都开出了蔷薇。

He went to strike at the hedge, but where his sword met the thorns, great roses bloomed instead.

在昏暗光条件下的海马比起黑暗环境下的海马减少了重要的树突棘。

The hippocampi from the dim-light group had significantly fewer dendritic spines than those from the dark night group.

美国和瑞士的科学家研究了非洲湖泊中的棘鳍类热带淡水鱼。

Scientists in the U.S. and Switzerland were studying the cichlids that live in African lakes.

而这些蛋白质对于增粗树突棘并形成长期记忆来说是必需的。

These proteins are necessary for the enlargement of a dendritic spine that allows the establishment of a long-term memory.

海胆长长的可以活动的棘突可以保护他们在夏威夷海岸不受捕食者捕食。

A sea urchin's long, moveable spines protect it from predators in the waters off Hawaii.

三棘带？是种善于偷袭的捕食动物，能够改变身体颜色以融入环境。

This ambush predator can change its color to blend with its surroundings.

三棘带？是种善于偷袭的捕食动物，能够改变身体颜色以融入环境。

This ambush predator can change its color to blend with its surroundings.