The two-sphere model arises from some very simple observations of the stars which anyone can make.
这种双球面学说是根据任何人都能做到的对星星的简单观察而提出的。
In contrast to the simple observations of the tides, tidal current studies are difficult and expensive.
与潮汐的简单观测不大相同，潮流研究的难度既大、费用也巨。
Observations, which to an outsider might sound like simple things, are often remarkably difficult, and depend on complex models to make any sense at all.
对于门外汉来说可能是件简单的事情，但是这样的观测常常是很难进行的，并且需要依靠负责的模型来解释一切。
Tuning SQL queries is not simple; it involves a well-planned and well-designed test strategy, careful observations and in-depth analysis.
SQL查询的调优并不简单；它包含计划和设计都很好的测试策略、细致的观察和深入的分析。
“Here everything was simple, clear and unconfused,” he wrote of his observations, the beginning of modern neuroscience.
卡哈尔在其观察记录中写道。由此，开创了现代神经科学。
Another simple pattern for safely using volatile is when observations are periodically "published" for consumption within the program.
安全使用volatile的另一种简单模式是：定期“发布”观察结果供程序内部使用。
Known as cube satellites, or "CubeSats," the devices help researchers conduct simple space observations and measure characteristics of Earth's atmosphere.
众所周知的立方体卫星，或者“CubSats”，是帮助研究者指挥进行简单的太空观察和对地球的大气层进行测量的设备。
Simple models, no matter whole mantle convection model, or layered mantle convection model, cannot explain all the observations.
无论是简单的全地幔对流模型或分层地幔对流模型，都不能完全解释全部观测事实。
The present theory must be able to account for these observations. [23] Therefore, we are basically reformulating the theory of the unconscious rather than in any simple way throwing it out.
我们的理论一定要能够说明这些观察。[23]我们基本上是重述无意识的理论，而不是简单地直接丢掉。
Waterbirth is simple. Within the simplicity of water labor and birth lies a complexity of questions, choices, opinions, research data, women's experience and practitioner observations.
水中分娩很简单。简单的水中待产和分娩是一个复合体，包括问题、选择、意见、研究数据、妇女的经验和医生的观察。
Waterbirth is simple. Within the simplicity of water labor and birth lies a complexity of questions, choices, opinions, research data, women's experience and practitioner observations.
水中分娩很简单。简单的水中待产和分娩是一个复合体，包括问题、选择、意见、研究数据、妇女的经验和医生的观察。
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