sub·or·di·nate clause
noun/səˌbɔːdɪnət ˈklɔːz/
/səˌbɔːrdɪnət ˈklɔːz/
(also dependent clause)
(grammar)- a group of words that is not a sentence but adds information to the main part of a sentence, for example when it rang in She answered the phone when it rang.
从句；从属分句