板上钉钉:set in stone: sth is impossible to change
e.g. The schedule isn't set in stone.
计划还没有板上钉钉。
or 翻译成:sure thing (口语)
e.g It's a sure thing that he'll marry her.
他娶她是板上钉钉的事。
板上钉钉:set in stone: sth is impossible to change
e.g. The schedule isn't set in stone.
计划还没有板上钉钉。
or 翻译成:sure thing (口语)
e.g It's a sure thing that he'll marry her.
他娶她是板上钉钉的事。