lay down
片語動詞所屬單字lay
lay down — 片語動詞
1. To put something flat on a surface or to establish a rule or principle.
1.片語動詞
釋義
放下；制定
To put something flat on a surface or to establish a rule or principle.
例句
The carpenter laid down his tools and took a break.
The school laid down new rules about cell phone use.