Self-service service terminal
single-plane (through-plane service) service
material of instruction; matter for teaching; subject matter; subject-matter
subject ship being free or subject open
Break of Service， Out-of-Service
free medical service; free medicare; public health service
in service and out of service
overland common point service {= OCP service}
search and rescue service {= SAR service}
service oriented architecture service
Value Added Service (VAS)New Service
Students-the Subject classroom teaching
A learning website of English subject
a rising interdisciplinary subject
a synthetic multi-subject study
academic subject construction