What keeps all that produce moving? Thousands of migrant workers, many undocumented.

是什么让农产品持续增长？成千上万的外来工人，很多都没有正式文件。

youdao

What keeps all that produce moving? Thousands of migrant workers, many undocumented.

是什么让农产品持续增长？成千上万的外来工人，很多都没有正式文件。

youdao