hymnbook

1. It was a useless innovation until one of the company's scientists was in church and realized that the glue could have stopped his bookmark from slipping out of his hymnbook.
   它一直是一个无用创新，直到后来3M公司有一位科学家当在教堂时发现这种胶水能防止书签从赞美诗集中掉落。

noun

1. a songbook containing a collection of hymns

   Synonym:    hymnalhymnary