It is entirely impossible for a body to attain speeds faster than that of light.

要让一个物体获得比光速还快的速度是完全不可能的。

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With absence of mental stimulus of this kind, human cooperation would be entirely impossible;

没有这种精神刺激，人类合作就完全不可能；

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The year I spent researching and writing this book would have been entirely impossible were it not for the unwavering support of my wonderful wife.

若无我可爱的妻子的坚定支持，我就完全不可能花一年的工夫，来做研究并且写这本书。

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Junking these deductions entirely may be politically impossible.

ECONOMIST: America's fiscal deficit

Despite his best efforts, it was impossible to adhere entirely to the biblical description of the Ark.

CNN: Dutchman builds replica Noah's Ark after flood dream

Mike Parker, assistant secretary of the Army, told the House Transportation and Infrastructure panel that risk is everywhere and impossible to eliminate entirely.

CNN: FBI: 'No specific, credible threats' to drinking water