To call land "marginal" means it is not very good.
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Related: marginal
Prev: Copies of many of the classical texts used by sixteenth-century teachers, including marginal notes describing the oral lessons that were based on the texts, can be found in museums today.
Next: Yet it makes only marginal difference whether a student gets his or her education from a computer or a real live human if the content is irrelevant to the jobs market.
