spell out
US /spel aʊt/
UK /spel aʊt/

1.
2.
闡明, 詳細說明
to explain something clearly and in detail
:
•
The instructions spell out exactly what you need to do.
說明書詳細闡明了你需要做什麼。
•
The report spells out the risks involved in the project.
報告闡明了該項目所涉及的風險。