要严格区分导致气候恶化的因素和有助于气候改良的因素并不容易，因为有时这两种因素是合二为一的。
Separating the factors that contribute to climate change from the things that help reverse it is not always easy because sometimes they're one and the same.
所以，当气候发生变化或者有新的害虫出现，那么基因改良树木就将全部死亡。
So, if the climate changes or new pest engages in, the genetically modified trees will likely be completely wagged out.
计算表明，白洋淀对局地气候有调节和改良作用。
The calculation shows that the Baiyangdian Lake has an regulative and progressive effect on the local climate.
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