Yet the relationship between fetus deformities and pollution still awaits in-depth research. However, a number of pollutants which have come with industrial development have already been certified as factors raising the rate of birth defects.
雖然胎兒畸形和污染物質的因果關係如何，還有待深入研究；但隨工業發展而來的許多污染物質，已被確認為導致新生兒畸型發生率上升的原因之一。