This experiment certainly does not definitely prove that girls start to reason before boys, but it provides a clue that scientists would like to study more carefully.
这个实验当然不能肯定地证明女孩比男孩更早开始懂道理，但它提供了一条让科学家们想要更仔细研究的线索。
Even carefully constructed observational studies that correct for such variables can only find correlations, not prove a cause-and-effect relationship.
即便是那些精心设计、对这些变量已作调整的观察性研究也只能发现其中的相关性，而无法证实一种因果关系。
These losses must be carefully documented-both to prove that they occurred, and that they were caused by the spill rather than by the recession, or anything else.
这些损失必须详细记录在案——证明他们存在的和由喷洒引起的，而非撤回的或其他。
It discusses carefully the basic concepts and inference rule of the resolution principle. According to the discussion, resolution method is used to prove a mathematical theorem through a example.
对归结原理的基本概念与推理规则进行了讨论，并在此基础上通过实例探讨了归结推理方法在数学定理证明中的应用。
It discusses carefully the basic concepts and inference rule of the resolution principle. According to the discussion, resolution method is used to prove a mathematical theorem through a example.
对归结原理的基本概念与推理规则进行了讨论，并在此基础上通过实例探讨了归结推理方法在数学定理证明中的应用。
应用推荐