首先，这些牡蛎壳要被清洗，然后再被送到马里兰大学环境科学中心进行下一步处理。

First the shells get washed. Then they go to the Center for Environmental Science at the University of Maryland for further processing.

youdao

首先，这些牡蛎壳要被清洗，然后再被送到马里兰大学环境科学中心进行下一步处理。

First the shells get washed. Then they go to the Center for Environmental Science at the University of Maryland for further processing.

youdao