causatively怎么读，causatively什么意思，causatively短语和例句

1.These experiments confirmed that the environment-induced increase of BDNF in the brain and consequent decline in leptin were causatively involved in the observed beneficial effects.

这些实验证明由环境导致的大脑内BDNF增加和瘦素下降对肿瘤的缩小有着可观的有益作用。

2.These experiments confirmed that the environment-induced increase of BDNF in the brain and consequent decline in leptin were causatively involved in the observed beneficial effects.

这些实验证明由环境导致的大脑内BDNF增加和瘦素下降对肿瘤的缩小有着可观的有益作用。