Correct
铁板钉钉
/ tiě bǎn dìng dīng /
Strokes
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Collocation
1
铁板上钉了钢钉
2
铁板上钉钉
3
铁板钉钉的事实
4
如同铁板钉钉
5
事情已是铁板钉钉
6
事情已经铁板钉钉
Definition
铁板钉钉
Literally means:
driving a nail into an iron sheet
Actually means:
It means driving a nail into an iron sheet, which figuratively means something is decided and will not change. It can also indicate that one is firm and determined in doing things. It has a strong definite tone.
在铁板上钉上铁钉。比喻事情确定无疑，不会改变。也指人的性格刚强，办事的态度坚决。语气十分肯定。
Example
Used as predicate, attributive or object, and it can have other words in between. (作谓语、定语、宾语，中间可以插入别的词语)
1
Zhè
这
zhī
支
qiúduì
球队
jīnnián
今年
páimíng
排名
dìyī
第一
yǐjīng
已经
tiěbǎndīngdīng
铁板钉钉
,
yòngbuzháo
用不着
huáiyí
怀疑
le
了
。
The team's number one ranking this year has been nailed, no doubt about it.
2
Tā
他
de
的
gèxiàng
各项
zuìxíng
罪行
yǒurén
有人
zhèng
证
wùzhèng
物证
,
shì
是
tiě
铁
bǎnshàngdīngdīng
板上钉钉
de
的
shìshí
事实
,
bù
不
kěnéng
可能
tuīfān
推翻
。
The fact that his crimes have been physically and materially evidenced is a hard fact and cannot be overturned.
3
Lǎo
老
duìzhǎng
队长
de
的
huà
话
rútóng
如同
tiěbǎndīngdīng
铁板钉钉
,
kànlai
看来
tā
他
shì
是
bùhuì
不会
gǎibiàn
改变
le
了
。
The old captain's words are like a nail in the coffin, it seems that he will not change.