1.
"It has one dorsal and one anal fin, Both long and Both connected to the rounded tail. "
背鳍和臀鳍各一,形长,均与尾鳍基部相连,尾鳍圆形
2.
an anal [dorsal, pectoral, ventral] fin
尾 [背,胸,腹] 鳍
3.
Research on Flow Field Characteristics of Oscillating Caudal Fin Based on DPIV Technology
基于DPIV技术的摆动尾鳍流场特性研究
4.
They have body fins and tail fins.
他们有身体鳍和尾巴鳍，
5.
Catamaran-stern Hull s Lines Character and Local Transformation Method Research;
双尾（鳍）船型线特征及局部变形设计方法研究
6.
Modified control of tail fin servo system of robot-fish
基于机器鱼尾鳍推进伺服系统的改进控制算法
7.
large edible rays having a long snout and thick tail with pectoral fins continuous with the head; swim by undulating the edges of the pectoral fins.
大型可食用鳐，长有长鼻子、粗尾巴和一直连到头部的胸鳍；靠有波状边缘的胸鳍游动。
8.
A part or an organ, such as an arm, a leg, a tail, or a fin, that is joined to the axis or trunk of a body.
附器，附肢与身体的轴或躯干相连的部位或器官，如胳膊、腿、尾或鳍
9.
"All species are less than 18 in. (45 cm) long and have winglike, rigid fins and an unevenly forked tail."
体型皆小,最大约长45公分,具翼状硬鳍和不对称的叉状尾部。
10.
Full pearls below the dorsal fin area cum golden brush on the tail makes this a High Grade Bukit Merah Blue brooder.
高级布奇美拉蓝底过背的背鳍下面盖满小珠鳞及散布金粉的尾部。
11.
fish having greatly elongated front rays on dorsal and anal fins.
背鳍和尾鳍上有很细长的触须的鱼。
12.
any worm of the Chaetognatha; transparent marine worm with horizontal lateral and caudal fins and a row of movable curved spines at each side of the mouth.
毛颚类动物的蠕虫；透明的海生蠕虫，侧部水平，有尾鳍，嘴巴每侧有可卷曲活动的一排棘刺。
13.
"Dart:a slender, pointed missile, often having tail fins, thrown by hand, shot from a blowgun, or expelled by an exploding bomb."
"飞镖,标枪:细长带尖的投掷物,通常尾部有鳍,用手掷、从吹矢枪中发射或由炸弹推动."
14.
A slender, pointed missile, often having tail fins, thrown by hand, shot from a blowgun, or expelled by an exploding bomb.
飞镖，标枪细长带尖的投掷物，通常尾部有鳍，用手掷、从吹矢枪中发射或由炸弹推动
15.
The upper and lower fins don't cover the tail or leave a big gap before the tail.
背鳍和腹鳍不包含鱼的尾巴，或者说，和尾巴离开一个很大的空隙。
16.
Experimental study on hydrodynamic performance of a bio-tail fin propulsive system
仿鱼尾鳍推进系统的水动力性能试验
17.
Any of a breed of goldfish having a wide, fanlike double tail fin.
扇尾金鱼有宽的扇状双尾鳍的家养金鱼
18.
Likewise, the animal's tail fin and flipperlike hind limbs suggest an aquatic lifestyle.
牠的尾鳍与鳍状的后肢也同样显示了水中的生活方式。