当尾巴摆动时，水会移动并拖动颗粒。
As the tail swings, the water moves and drags the particles along.
而它的尾巴摆动起来就像一台大功率的推进器。
这种转变包括从用前肢划水到身体波动再到尾巴摆动，就像现代鲸鱼的水平尾鳍。
This transition to living in the sea involved changes from paddling with limbs to undulating the body to oscillating a tail, such as the horizontal tail flukes in modern whale species.
正如查理的创作者所说的那样，他们在“拥有相对僵硬的躯干的快速潜艇形鱼类靠相当小的身体和尾巴摆动来游水。”
As Charlie's creators put it, they were after "a fast submarine-shaped fish with a relatively rigid torso that swims with fairly small body and tail motions".
我的双脚就像小狗等待散步时摆动起来的尾巴一样欢乐。我的脚知道它们自己很安全。
My feet rejoice like the wagging tail of a dog waiting for its walk. My feet know they are safe.
牛摆动着尾巴。
他的心像小羊的尾巴一样快乐地摆动着。
一些学者指出，大象和长颈鹿都不会摆动它们又长又粗的尾巴来阻止雄性的靠近。
Some point out that neither elephants nor giraffes sport long, thick tails to obstruct male access.
它们多想尝一尝啊，所以一到周五，这两个家伙就表现得十分好动，莫德会快速疯狂地频频上下摆动它的黄色小脑袋，哈罗德摇着尾巴，围着餐桌绕来绕去，眼睛不停地冲主人们眨着。
Maude would Bob her small yellow head up and down in a feathered frenzy. Harold would circle the table, wagging his tail and batting his eyes.
事实上，当灯光熄灭时，鱼仔以惊人的精确度继续用同样的节奏左右摆动尾巴，很像一个节拍器。
Indeed, when the lights went out, the larvae continued to flap their tails to the same rhythm with astonishing precision, much like a metronome.
就像蓝调音乐家脚踏音乐节拍一样，斑马鱼也能够学会跟着闪光的节奏左右摆动尾巴——并且在光熄灭之后还记得这些节拍。
Like a blues musician tapping his foot to the music, zebrafish can learn to flap their tails to the rhythm of a flashing light — and remember the beat after the light has gone out.
莫德使劲地摆动着她的脑袋，哈罗德则摇着尾巴，冲着主人们不停地眨眼，终于有人注意它们了。
Harold wagged his tail and batted his eyes into the face of each family member. At last someone noticed!
这是自信的表现。一边威严地走路一边左右来回摆动尾巴可以显示自己的力量，也表明它们在自己的领地上。
It shows confidence. They show their strength by walking majestically and swinging their tail from left to right. It is also a sign that they are within their territory.
我们看到一只巨大的东方蓝鲸摆动着尾巴，围着锅炉转悠。
We spot a massive eastern blue groper wagging its tail and circling the boiler.
短吻鳄摆动着它的尾巴。
槛中的狮子猛烈地摆动尾巴。
那匹马摆动着尾巴撵走苍蝇。
它跑的时候白尾巴上下摆动。
狗见到我们时摆动着尾巴。
它们摆动着小尾巴用最快的速度在游。
They swim by waggling their small tails as fast as they can.
别靠近它摆动的尾巴。
高兴时的表情：犬使劲摆动尾巴、向高处跳跃，这是最常见的一种表现方式。
Happy expression: dogs to high swing tail, hard, this is the most common jumping an expression.
这时我似乎看见它的尾巴轻轻摆动了一下。
在竞赛中，平毛寻回犬显得稳定、容易满足而自信、欢快、喜欢外出。摆动的尾巴显示出他的特质。
In competition the Flat -coat demonstrates stability and a desire to please with a confident, happy and outgoing attitude characterized by a wagging tail.
尾巴不见也是很久前的事了，剩下的只有一段小到不能再小的尾椎，能让他时不时跳跃或摆动。
His tail has long since been lost, leaving only the smallest stub, which he would constantly jerk and twitch.
尾巴不见也是很久前的事了，剩下的只有一段小到不能再小的尾椎，能让他时不时跳跃或摆动。
His tail has long since been lost, leaving only the smallest stub, which he would constantly jerk and twitch.
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