theory

• In eighteenth century the theory shrank .
  在18世纪这种理论开始衰落。
• These theories drew analogies of them .
  这些理论吸取了它们的相同点。
• In theory the plan should have worked .
  按理论那个计划应该是有效的。
• The mathematics of the theory is too formidable .
  理论中的数学太难。
• All the facts certainly fit your theory .
  所有的事实当然符合你的理论。
• An example is the kinetic theory of gases .
  一个例子是气体的运动理论。
• Your theory disaccords with my experience .
  你的理论和我的经验不一致。
• Let us put his theory to the proof .
  让我们来检验一下他的说法吧。
• His theories met with general discredits .
  他的理论遭到普遍怀疑。
• Theory must not be divorced from practice .
  理论与实践不能脱节。