Correct

开天窗

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Strokes
https://i.cchatty2.com/filters:format(webp)/fit-in/684x0/img/202102/开天窗-Chinese-idioms-Cchatty-8f8f01bd-a5f5-42aa-ac9d-0daf37cdf2bd-1612777025.jpg

Collocation

1
考卷上开了好几个天窗
2
开天窗的事
3
作业不准开天窗
4
报纸开天窗

Definition

开天窗

Literally means:

open the skylight

Actually means:

leave a blank in a publication

The skylight is a window-like apparatus equipped to the roof for light and ventilation.

This phrase means that there is a routinely disallowed blank in the newspaper or a word blank in students' homework.

天窗,屋顶上类似窗子的装置,用来采光和通风。

开天窗,指报纸版面上出现了按常规不应该有的文字空白,或学生作业等出现文字上的空白。

Example

Used as predicate, object or attributive. It can be used with other words in between. (作谓语、宾语、定语,中间可以插入别的词语)
1
Jiěfàngqián
解放前
bàozhǐ
报纸
shàng
de
wénzhāng
文章
guǒ
如果
符合
yāoqiú
要求
  
,
jiù
必须
cóng
jīng
已经
pái
hǎo
de
bǎnmiàn
版面
shàng
chè
xiàlai
下来
  
,
shǐ
使
bàozhǐ
报纸
jīngcháng
经常
kāi
tiānchuāng
天窗
  

If the articles in the pre-liberation newspapers did not meet the requirements, they must be removed from the already lined pages, so that the newspapers often open the skylights.

2
zhīdào
知道
néng
zài
kǎojuàn
考卷
shàng
kāi
tiānchuāng
天窗
  
,
dàn
xiànzài
现在
jīng
已经
kāi
le
hǎo
好几
tiānchuāng
天窗
  
,
kǒng
恐怕
chéng
成绩
yào
及格
le
  

He knew he couldn't open the skylight on the exam paper, but now he's opened several skylights, and I'm afraid I'm going to fail.

3
Xuésheng
学生
zuò
作业
kāi
tiānchuāng
天窗
de
shì
jīngcháng
经常
shēng
发生
  
,
zhè
也许
shì
zuò
作业
tài
nán
de
yuán
缘故
  

Student homework open skylights often happen, which may be because homework is too difficult.