Chinese phrase
办公时间是〜到〜？ bàn gōng shí jiān shì 〜 dào 〜
Meaning
Are office hours from ___ to ___?
When to use it
Asks whether office hours run between two stated times. It is a polite way to check regular working hours.
Example dialogue
请问办公时间是上午9点到下午5点？ qǐng wèn bàn gōng shí jiān shì shàng wǔ 9 diǎn dào xià wǔ 5 diǎn
Excuse me, are office hours from 9 a.m. to 5 p.m.?
是的，周一到周五9点到17点办公，周末休息。 shì de zhōu yí dào zhōu wǔ 9 diǎn dào 17 diǎn bàn gōng zhōu mò xiū xī
Yes, we are open from 9 a.m. to 5 p.m. Monday through Friday, and closed on weekends.