Correct
事由
/ shìyóu /
Strokes
Definition
main content/matter/work/origin of an incident/cause/purpose/subject (of business letter)
Example
As a Noun
origin of an incident; particulars of a matter
1
Wènqīng
问清
shìyóu
事由
gain a clear idea of the whole story; know the whys and wherefores of the matter
2
Bǎ
把
shìyóu
事由
jiǎng
讲
míngbái
明白
give all the particulars about the incident
As a Noun
［used in official documents］ main content; gist
As a Noun
excuse; pretext
As a Noun
job; work