HSK 4 · preposition
由
from; by; to be up to (由)
这个问题由经理决定。
Zhège wèntí yóu jīnglǐ juédìng.
This matter is up to the manager to decide.
由于堵车，他迟到了。
Yóuyú dǔchē, tā chídào le.
He was late because of the traffic jam.
他迟到的理由是堵车。
Tā chídào de lǐyóu shì dǔchē.
His reason for being late was the traffic jam.
这次比赛由老师来评。
Zhè cì bǐsài yóu lǎoshī lái píng.
The teachers will judge this competition.