393.“These things seem to be so common that it is practically impossible to avoid coming into contact with them," says Frederick vom Saal, a biologist at the University of Missouri.
“这些东西好像无处不在，我们实际上不可能不和它们发生联系，”密苏里大学的生物学家弗雷德里克·冯·萨尔说。

六级词汇讲解:

该句中出现了so…that…句型，表示“如此……以至于……”，that后是结果状语从句。so that还可以连在一块，用来引导目的状语从句，表示“以便，为了”.如：
The little boy saved everycoin so that he could buy his mother a present on Mothers day.
为了能在母亲节给妈妈买份礼物，小男孩攒下了每一枚硬币。

从句中it is impossible to...表示“……是不可能的”，come into contact with意为“与……有关系”。