The first dorsal fin is black at the front.
第一个（刺背鳍是在前面的黑。
No dorsal ridge was found in the egg surface.
卵表面在光镜下未见有卵脊。
If she has fever, you can do the dorsal massage.
如果她发烧，你可以给她做一下背部按摩。
The shark's dorsal fin was cut off by the fisherman.
鲨鱼的背鳍被渔夫割了下来。
A second part of the brain is called the dorsal stream.
大脑的第二个部分叫做背流。
The ulnar dorsal branch of the little finger was absent.
小指尺侧无指固有神经背侧支。
Its dorsal fin was in front of me. I was screaming for help.
它的背鳍就在我的前面，我尖声呼救。
The wing is a flattened evagination of the dorsal body wall.
翅是昆虫背板的片状翻出物。
However, the role of the dorsal pathway in reading is complex.
腹侧通路与背侧通路是视觉加工的两条通路。
His dorsal fin was down and his huge pectorals were spread wide.
它的脊鳍朝下耷拉着，巨大的胸鳍大张着。
Even cleaning his pen with the "dorsal" part of his tie was not exceptional.
清理他的笔，甚至“背”的一部分，他的领带，没有例外。
We know this because we can distinguish the male by their large dorsal fin .
我们能知道是因为可由大背鳍区别为雄性。
Dorsal position was adopted in the first group and hugged-erect position in the second group.
第一组均采用仰卧位透视，第二组均采用抱立位透视。
Dorsal position was adopted in the first group and hugged-erect position in the second group.
第一组均采用仰卧位透视，第二组均采用抱立位透视。
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