theory

• Theory is something , but practice is everything ..
  理论虽重要，实践更重要。
• The first is the channel theory of permeability .
  第一个是透过度的通道理论。
• This theory will not bear examination .
  这个理论经不起检验。
• It is a nearly static theory .
  这是一条几乎一成不变的理论。
• This is not a treatise on statistical theory .
  这不是一篇有关统计理论的论文。
• He has n't a leg to stand for this theory of his .
  他的这种理论是站不住脚的。
• Your theory does not square with the known facts ..
  你的说法跟已知的事实不符。
• This is the first main crux of dynamic theory .
  这是动态学说第一个主要的难题。
• His larger theories seem to be questionable .
  他的大部分理论看来并非无懈可击。
• These facts sustain the theory .
  这些事实证实了这种学说。