lay down

phrasal verb

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lay something down

to put something down or stop using it放下；停止使用 synonym put down
- She laid the book down on the table.她把书放在桌上。
- Both sides were urged to lay down their arms (= stop fighting).双方都被敦促放下武器。
(formal) to stop doing a job, etc.中断（工作）；辞（职）；放弃
- to lay down your duties停止履行职责
if you lay down a rule or a principle, you state officially that people must obey it or use it规定，制定（条例或原则）
- You can't lay down hard and fast rules.规则不能定得太死。
- it is laid down that… It is laid down that all candidates must submit three copies of their dissertation.根据规定，所有学位答辩人均须提交论文一式三份。
Topics Permission and obligationc2
[usually passive] to produce something that is stored and gradually increases积存
- If you eat too much, the surplus is laid down as fat.要是吃得太多，过剩的营养就会积聚成为脂肪。