服务

It's our pleasure to serve you.

She served in the bank for 20 years.

Theory is based on practice and in turn serves practice.

perform a real service for the public

serve one's motherland

render excellent services

Does this hotel provide room service?

advisory/information service

poor service

assiduous service

fine/excellent/quality service

after-sales service; after service

door-to-door service; service to your door (step)

free/gratuitous service

utility services

high standard of service

time/directory service

service network

standard of service

period of service

length of service

service standard

volunteer one's service

offer/provide/render/perform a service (to)