Santos and her team ran chemical tests to find out what kind of plastics are in the rocks called " plastiglomerates" .

桑托斯及其团队进行了化学测试，以弄清岩石中被称为“塑料团块”的塑料类型。

They are called " plastiglomerates" because they are made up of small parts of rock and other materials and it is held together by plastic.

它们被称为“塑料团块”，因为它们是由岩石和其他材料的小部分组成，并由塑料粘连在一起。