Both annelids possess a closed circulatory system with tubular hearts and a dorsal and ventral blood vessel. In both specimens, pin the following.
二种环节动物皆具有闭锁循环系，包括管状的心脏及背血管，腹血管。用大头针标示二标本的下列构造：。
There are two circumoral ciliary rows on the buccal region and a dorsal row of bristles.
其腹面口区具二环围口纤毛列；背面具一列背刚毛。
They were documenting the dorsal fins of sharks, as part of an identification program, when a 10-foot-long great white shark suddenly landed on their vessel.
那天在莫斯湾的船上他正在与其他六名船员正在进行对鲨鱼群背部鳍记录的识别项目，一只10英尺长的大白鲨突然间跃上他们的船舷。
They are cobalt-blue on top and silvery-white below, with a pronounced dorsal fin and a long, lethal, spear-shaped upper jaw.
它的顶部是钴蓝色，下面和银白色；有着明显的背鳍，还有着长长的、能致命的矛状上颚。
The researchers reasoned that a good way to home in on the organ's molecular heat detectors would be to compare the trigeminal ganglia with the dorsal root ganglia.
研究者们推断解决窝器的热量探测问题的一个好方法就是将三叉神经节和背根神经结做比较。
In this micrograph of a dorsal closure in a fruit-fly embryo, the protein actin is marked red, prominent around the gap in the epithelial cells.
这是一只果蝇背向闭合行为的显微图片，其中被涂成了红色的蛋白质活跃于皮层细胞的勾缝四周。
Witnesses reported seeing a dorsal fin and thrashing in the water before the sea turned red and the man vanished at the scene on Australia's west coast.
目击者称看到有鲨鱼背鳍在水面上时隐时现，后来发现海水变成红色，而那名男子也从澳大利来西海岸上消失了。
It thumps the catch against the branch to stun it-a lesson some young birds learn only after swallowing a stickleback that erects its dorsal spine on the way down.
然后它会在树枝上把鱼摔死——当小鸟能够顺着鱼的背脊吞下一只棘鱼时，才会学习这个技能。
They also have broad flippers, a reduced dorsal fin (a larger one would just get in the way in tight spots), and small eyes—echolocation helps them pinpoint prey in muddy water.
鳍状前肢宽大，背鳍退化（较大的背鳍在狭窄处会造成阻碍）小眼睛——因为他们可利用回声，精确定位河泥里的猎物。
The dorsal fin coloration of the male is a circular red spot ringed with blue which scientists said reminded them of Obama's campaign logo.
这条雄性的鱼，背鳍是蓝色，上面带着红色圆形点，科学家们表示会联想到奥巴马的竞选标志。
Then a second network, the dorsal fronto-parietal network, turns the spotlight of attention to the change and, upon the next event beginning, updates working memory.
接着，第二个网络，称为腹侧额颞网络（ dorsalfronto-parietal network），将注意力集中于这一改变，并且在下一事件的开始时更新记忆。
When we see others fall, it sometimes causes a chemical to be released in the dorsal striatum of the brain, which actually causes us to feel pleasure.
当我们看到其他人失败，有时候大脑的背纹状体会产生一种化学物质使我们感到愉快。
On the gunship's dorsal surface are its primary armaments, two massive rocket launchers fed by a rear-mounted missile belts.
炮艇的主要武器位于脊背表面，两个大型火箭发射器由安装在后部的弹带供弹。
The front of the walker is lined with four ball-turret laser cannons, while a single heavy projectile cannon is turret-mounted on the vehicle's dorsal surface.
步行机的前部排列着四座激光球型炮塔，一门单独的重型榴弹炮安装在步行机脊背表面的炮塔上。
The ray's dorsal side, invisible in this image, is covered with a signature pattern of vivid spots.
由于角度的问题，斑点鹰魟那覆盖着标志性斑点图案的背部没办法看得到。
The dorsal hand vein highlights: with increasing age, there is such a phenomenon, but also have heart disease may.
手背静脉突出：随着年龄增加，会有此现象，但也有心脏病的可能。
Large elongate scale less oceanic fishes with sharp teeth and a long sail-like dorsal fin.
细长的大型海生无鳞鱼，有尖牙和船帆形的长背鳍。
Their backs were battleship gray topped with a saw-toothed line of small yellow dorsal fins.
它们的背部是军舰的灰色，最上方是呈锯齿状的黄色背鳍。
Abstract: Objective to provide anatomy basis for a free latissimus dorsal muscular flap with the sensate nerve.
摘要：目的为形成带感觉神经的背阔肌游离皮瓣提供解剖学基础。
Objective To develop a morphology research on the quantitative evaluation indexes for skin aging of the dorsal hand.
目的：开展手背部皮肤老化形态学定量评价指标的研究，为客观评价皮肤老化提供手段。
Objective to provide anatomy basis for a free latissimus dorsal muscular flap with the sensate nerve.
目的为形成带感觉神经的背阔肌游离皮瓣提供解剖学基础。
It is difficult to break the five quick myth, let the past five dorsal root difficult to say a thing of the past.
它打破五笔难以速成的神话，让过去人们五笔字根难背说法一去不复返。
Objective To introduce a new method for repairing the dorsal skin and vein defect in replantation of severed fingers.
目的探讨伴有指背皮肤和静脉缺损的断指再植的修复方法。
Routine massage method was applied in control group, manual replacement with the lumbar part in a anteflexed and dorsal protraction condition was applied in treatment group.
对照组采用常规推拿手法治疗，治疗组在病人腰部前屈背伸的动态下进行手法复位。
A second part of the brain is called the dorsal stream.
大脑的第二个部分叫做背流。
It is not unusual to see a striper 's dorsal fin whizzing past you while casting in knee deep water.
这不是不寻常的看到一个变色的背鳍驰驱，过去你而铸造的膝盖深的水。
The main superstructure takes its form from the head of a Dragon while the decks and communication tower are inspired by the dorsal crests of Dragons and beautiful Marine iguanas.
上层构造的主体部分的形态来自鬣蜥的头部，而甲板和通信塔的灵感则来自龙和美丽海鬣蜥的颈脊。
The sections will all be presented with the fetus in a cephalic dorsal position (Figure 1).
本部分中胎儿的先露位置均为头侧仰卧位（图1）。
The sections will all be presented with the fetus in a cephalic dorsal position (Figure 1).
本部分中胎儿的先露位置均为头侧仰卧位（图1）。
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