答案是地球运动的动力学，顺便说一下，这也是导致冰河时代的原因。
The answer is the dynamics of earth's motions, the same thing that caused the Ice Age by the way.
这并不奇怪，因为任何会飞的脊椎动物的设计都受到空气动力学的限制。
This is not surprising because the design of any flying vertebrate is subject to aerodynamic constraints.
"如果海龟没有符合流体动力学结构的鳍的话，他们也不能解决这个问题。
There is not much that the turtle can do about this without compromising the aerodynamic shape of the flipper.
金枪鱼、鲭鱼和长嘴鱼有比这些更复杂的适应性，以提高自己的流体动力学。
Tunas, mackerels, and billfishes have even more sophisticated adaptations than these to improve their hydrodynamics.
在物理学中，运动的物体有两个特征与理解能量系统动力学相关：惯性和动量。
In physics, moving objects have two characteristics relevant to understanding the dynamics of energy systems: inertia and momentum.
根据心理动力学理论，预防有害攻击的最好方法可能是鼓励危害较小的攻击行为。
According to psychodynamic theory, the best ways to prevent harmful aggression may be to encourage less harmful aggression.
精神发泄法：心理动力学理论中的一个概念，指强烈情绪的消除或紧张情绪的缓解。
Catharsis: In psychodynamic theory, the purging of strong emotions or the relieving of tensions.
心理分析学家是采用心理动力学治疗方法的专家，他们认为攻击性冲动的发泄行为是一种“情绪宣泄”。
Psychoanalysts, therapists adopting a psychodynamic approach, refer to the venting of aggressive impulses as "catharsis".
有趣的是，这些流体动力学的适应性变化和人类为了改进高速飞机在空气动力学方面的设计特点十分相似。
Interestingly enough, several of these hydrodynamic adaptations resemble features designed to improve the aerodynamics of high-speed aircraft.
从脑血流动力学的角度探讨了临床表现的病理生理机制。
The patho-physiological mechanisms of the clinical manifestations were discussed from the cerebral hemodynamic point of view.
利用德国耐驰综合热分析仪对碳酸铈分解过程动力学进行了研究。
Thermal Decomposition reaction kinetics of cerium carbonate was investigated with Netzsch thermal analyzer.
采用酶动力学方法研究了对羟基肉桂酸对酪氨酸酶单酚酶的抑制效应。
The inhibitory effects of 4-hydroxycinnamic acid on the activity of monophenol oxidase in tyrosinase were studied using enzymological kinetic method.
本文综述了利塞膦酸钠的药理作用，药代动力学，临床应用和不良反应。
This article reviews risedronate sodium in its pharmaco-mechanism, pharmacokinetics, clinical application and adverse reaction.
对部分稀土离子参与下LeuRS催化的的氨酰化反应表观稳态动力学性质进行了研究。
The apparent steady state kinetics of the aminoacylation reaction catalyzed by LeuRS at the participation of some RE 3+ was studied.
掌握各种瓣膜玻璃体的血流动力学和心脏结构变化。
To master the fluid of hemodynamics of various valvular vitium of the heart and heart structure change.
所有这些都基于电动力学，是以太论的前提。
All this was based on classical electrodynamics, assuming an ether theory.
因此，我们来看看化学品之间的反应动力学。
计算这种不寻常环境的流体动力学无疑是项壮举。
Calculating the fluid dynamics of this unusual milieu is no mean feat.
在动力学关系中。
但是如果你提高温度，动力学有很好的温度依赖关系。
But it turns out, if you raise the temperature, kinetics is wonderful in terms of the temperature dependence.
这个的原因可能是由于生理以及空气动力学两方面的。
The reasons for this are likely to be both physiological and aerodynamic.
飞机的超音速和空气动力学完成将空气压缩入引擎的任务。
Its supersonic speeds and aerodynamics do the job, compressing the air into the engine.
学习更多关于这种动物-海洋动力学的知识对未来至关重要。
Learning more about this animal-ocean dynamic is critical to the future.
这项研究发布于美国物理学会流体动力学分会的一次学术会议上。
They presented their research at a meeting of the American Physical Society's Division of Fluid Dynamics.
蔡博士及朴博士相信从飞鱼身上仍有更多有趣的空气动力学技巧。
Dr Choi and Dr Park believe there are still more interesting aerodynamic tricks to be learnt from flying fish.
然而，从地球和木星轨道动力学的角度，这次消失是极端意外事件。
But due to the orbital dynamics of Earth and Jupiter, this particular disrobing was far more abrupt.
全新敏捷团队在最开始的会议上，应该了解团队动力学的基本知识。
What is required from the very first meeting of a new Agile team is to understand the basics of team dynamics.
如果你开着窗，根据车辆空气动力学的外形，你的车受的阻力较少。
If you keep your Windows up your car will be subject to less drag, which improves the aerodynamic profile of the vehicle.
事实上，根据空气动力学，这样一枚硬币还不足以对人构成任何威胁。
But the fact is, the aerodynamics of a penny are not sufficient to make it dangerous.
事实上，根据空气动力学，这样一枚硬币还不足以对人构成任何威胁。
But the fact is, the aerodynamics of a penny are not sufficient to make it dangerous.
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