Correct
事机
/ shìjī /
Strokes
Definition
confidential aspects of a matter/secrets/key moment for action
Example
As a Noun
secret/confidential matter; secret
1
Shìjī
事机
bàilù
败露
betray a secret
As a Noun
opportunity; opportune moment
2
Yánwu
延误
shìjī
事机
miss an opportunity because of a delay