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general::
Phrase(s): enter someone or something in(to) something
to enroll someone or something in something; to make someone or something a competitor in something. • I will enter you into the contest whether you like it or not. • The trainer entered his fastest horse in the race., Phrase(s): enter in something
to enroll as a participant in something, such as a contest, competition, etc. • She was not ready to enter in the competition. • I can’t enter in that contest. I’m not prepared.
McGrawhill's American Idioms And Phrasal Verbs