yǐ / qián / hěn / duō / gōng / chǎng / shí / xíng / chǎng / lǐ / bài / gōng / rén / men / bù / yòng / zhōu / rì / shàng / bān

以前很多工厂实行厂礼拜，工人们不用周日上班。

In the past, many factories implemented a factory-designated weekly day off instead of Sunday, so workers did not need to work on Sundays.