Alcohol is by far the most used and abused drug among America's teenagers.

目前为止，乙醇是美国青少年中最常用和滥用药物。

But in recent decades, scientists have discovered that alcohol can be remarkably toxic - more than any other abused drug - to developing fetuses.

但是近几十年，科学家们发现，酒精对正在发育的婴儿来说，具有比滥用任何药物都大的毒性。

Because alcohol affects so many sites in the brain, researchers have come to believe that alcohol is far worse for the developing fetus than any other abused drug.

因为究竟能影响到大脑很多区域，研究者们认为酒精比滥用其他药物更加影响胎儿的发育。