To argue for a cause-and-effectrelationship, scientists must attempt to explain why and how a connection could occur.
想要证明因果关系,科学家们必须尽量解释这种联系可能出现的原因和方式。
2
As yet a challenge to explain the cause-and-effectrelationship between sleep and nutrition, there may be a third factor that impacts both of them.
要解释睡眠和营养之间的因果关系,还有一个挑战,那就是可能有第三个因素对它们两者都有影响。
3
It's as yet a challenge to explain the cause-and-effectrelationship between sleep and nutrition. There may be a third factor that impacts both of them.