Chinese phrase
原因是〜 yuán yīn shì 〜
Meaning
The cause is ___
When to use it
States the cause of a situation or event. It introduces the reason for a result and is common in clear, factual explanations.
Example dialogue
这次停电，原因是电线老化。 zhè cì tíng diàn yuán yīn shì diàn xiàn lǎo huà
The cause of this power outage is aging power lines.
那要赶快联系维修公司。 nà yào gǎn kuài lián xì wéi xiū gōng sī
Then we need to contact the repair company right away.