1.
The heart is dorsal AND is provided with paired ostia
心脏位于背方，有一对心门。
2.
A primitive,bony freshwater fish(Amia calva)of central and eastern North America,with a long,spineless dorsal fin.
弓鳍鱼北美洲中部和东部的一种原始、多骨的淡水鱼(弓鳍鱼弓鳍鱼属)，具有长的无脊的背鳍
3.
They have two dorsal fins and often are brightly coloured. Most species are 2-3 in. (5-7 CM) long, but some grow to 9 in. (23 CM).
具两背鳍，体长多为2～3吋(5～7公分)，但有些可长至9吋(23公分)。
4.
Any of various brightly colored tropical Pacific scorpion Fishes of the genus Pterois,having venomous spines in the dorsal fin.
蓑一种太平洋赤道地区产蓑属色彩鲜艳的锯鱿鱼，背鳍上有毒刺
5.
Any of several marine Fishes of the family Trachinidae,having venomous spines on the gill cover and first dorsal fin.
龙鳖龙鳖科的几种海鱼之一，在鳃盖和第一背鳍上的许多毒刺
6.
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
7.
Only the dorsal lip of the blastopore could induce altered development in the Host
只有胚孔的背唇能够诱导宿主发育的改变。
8.
The analogous dorsal region In other animals.
动物的背部其它动物相似的背部部位
9.
A primitive,bony freshwater fish(Amia calva)of central and eastern North America,with a LONG.spineless dorsal fin.
弓鳍鱼北美洲中部和东部的一种原始、多骨的淡水鱼(弓鳍鱼弓鳍鱼属)，具有长的无脊的背鳍
10.
Relating to the caudal end of the body in quadrupeds or the dorsal side in human beings and other Primates.
背后的，尾部的与四足兽的身体尾部有关的，或与人类和其他灵长动物的背部有关的
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