Correct

闭气

/ bì qì / 
Strokes

Example

As a Verb

involuntarily stop breathing

1
Āi
挨
le
了
nā
那
yī
一
quán
拳
  
,
tā
他
chàdiǎnr  
差点儿
bì
闭
zhù
住
le
了
qì
气
  
。

He almost stopped breathing at the blow.

As a Verb

hold/bate/catch one's breath

2
Tòushì
透视
shí
时
yīshēng
医生
ràng
让
tā
他
xīqì
吸气
  
,
bìqì
闭气
  
,
ránhòu
然后
zài
再
hūqì
呼气
  
。

When he was being X-rayed, the doctor told him to take in a breath, hold it and then let it out.

3
Tā
他
bì
闭
zhù
住
qì
气
tīng
听
wán
完
le
了
zhè
这
xiāoxi
消息
  
。

He heard the news with bated breath.