Correct

说不准

/ shuō bù zhǔn /
Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/说不准-Chinese-idioms-Cchatty-473d1fe3-62dc-4b15-92d8-3b901d602bc9-1612778152.jpg

Collocation

1
这事我说不准
2
将来的事谁也说不准
3
目前还说不准

Definition

说不准

Literally means:

not sure

Actually means:

hard to say; maybe

It means being unable to explain something clearly or predict something accurately for not knowing the situation thoroughly or not being sure about it.

表示不完全了解情况,或对事情没有十分的 把握,不能确切地说清楚,或不能作准确的预测。

Example

Used as predicate. (作谓语)
1
men
他们
liǎng
rén
de
fēn
分歧
shì
zhīdào
知道
de
  
,
dànshì
但是
méi
cānjiā
参加
huì
会议
  
,
men
他们
zài
huìshàng
会上
zhēnglùn
争论
de
具体
qíngkuàng
情况
shuō
zhǔn
不准
  
,
zhǐnéng
只能
zhì
大致
shuō
shuō
  

I know the differences between the two of them, but I didn't attend the meeting.

2
Zhè
这次
táifēng
台风
cóng
shénme
什么
fāng
地方
dēng
登陆
  
,
qián
目前
hái
shuō
zhǔn
不准
  

Where the typhoon made landfall is not yet expected.

3
20
20
nián
hòu
以后
de
shì
shuí
shuō
zhǔn
不准
  
,
xiànzài
现在
hái
cāoxīn
操心
tài
zǎo
le
  

Twenty years from now, no one can say for sure, you're too early to worry.