subcontract

US /sʌbˈkɑːn.trækt/
UK /sʌbˈkɑːn.trækt/
1.

hợp đồng phụ

to pay someone else to do part of a job that you have agreed to do:

:
Most of the bricklaying has been subcontracted (out) to a local builder.
1.

hợp đồng phụ

an agreement for an outside person or organization to do work that might normally be done within an organization:

:
Another organization provides IT services to the school though a subcontract.