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general::
Phrase(s): train something on someone , something, or an animal
to aim something at someone, something, or an animal. • Dave trained the spotlight on Fred, who was just coming out of the building. • Train your lens on that bush. There is a deer back there., Phrase(s): train someone on something
to educate someone in the use of something. • We trained him on the high diving board, but he isn’t ready for competition yet. • She trained herself on the computer so she could write a book.
McGrawhill's American Idioms And Phrasal Verbs