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general::
Phrase(s): lie behind someone or something
1. [for something] to be positioned to the rear of someone or something. • A wide expanse of water lay behind the sentry, and a narrow roadway lay in front. • A vast field lies behind the house. 2. [for something] to be in someone’s or a group’s past. • Now that all of our difficulties lie behind us, we can get on with our business. • The busy season lay behind the company and people could take their vacations.
McGrawhill's American Idioms And Phrasal Verbs