教科書 angolul

coursebook▼(textbook)
noun
[UK: ˈkɔːs.bʊk] [US: ˈkɔːrs.bʊk]

textbook [textbooks]▼(formal manual of instruction)
noun
[UK: ˈteks.bʊk] [US: ˈtekst.ˌbʊk]