Meaning of zài yú:
zài yú
在于
Verb
to rest with; to lie in; to be due to (a certain attribute); (of a matter) to be determined by; to be up to (sb)
Chénggōng de guānjiàn zàiyú nǔlì hé jiānchí.
成功的关键在于努力和坚持。
The key to success lies in effort and persistence.
Chénggōng de guānjiàn zàiyú nǔlì hé juéxīn.
成功的关键在于努力和决心。
The key to success lies in effort and determination.
