what's the meaning of in short ,in case ,in doudt ,and in turn .I need you help

what's the meaning of in short ,in case ,in doudt ,and in turn .I need you help
what's the meaning of in short ,in case ,in doudt ,and in turn .
I need you help

what's the meaning of in short ,in case ,in doudt ,and in turn .I need you help
in short：简而言之,简单地说
in case：万一,以防,假如,如果
in doubt：感到怀疑的,有怀疑的,不敢肯定的,拿不准的,被怀疑的
in turn ：依次,轮流