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general::
Phrase(s): travel by something
1. to make a journey, using a particular conveyance. • I will go by train, since I don’t like to travel by plane. • We traveled by car, since that is the cheapest. 2. to make a journey under particular conditions. • I don’t ever travel by night. • We like to travel by day so we can see the scenery.
McGrawhill's American Idioms And Phrasal Verbs