At the bottom of the basket, lay three microfilms, each in a metal case.

篮子的最下面，放着三个缩微胶卷，每卷都用金属外壳装着。

youdao

At the bottom of the basket, lay three microfilms, each in a metal case.

篮子的最下面，放着三个缩微胶卷，每卷都用金属外壳装着。

youdao