In order to know that two events are causally related, you need to observe many such pairs of events.
为了知道那两个事件之间的关系，你需要的是存在于许多这样的观察成对的事件。
Systems consist of variables that are causally related to other variables in a net work of functions.
系统由变量的因果关系的其他变量净的工作职能。
It is well known that the nitrate and nitrite from environment is causally related to infant methemoglobinemia and esophageal cancer.
环境中的硝酸盐暴露与婴儿高铁血红蛋白血症及食管癌的病因关联已为人们熟悉。
It is well known that the nitrate and nitrite from environment is causally related to infant methemoglobinemia and esophageal cancer.
环境中的硝酸盐暴露与婴儿高铁血红蛋白血症及食管癌的病因关联已为人们熟悉。
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