Trench
Emergence definition
trench emerges from defense. It requires ocean.
Wiktionary senses
Historical origin
Prerequisite chain
Neighborhood
In other languages
Prerequisites
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trench builds on the concept of environment
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A trench has a defined structural form
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A trench is an elongated cut into the land
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trench builds on the concept of marine
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Long narrow ditch in the ground -- prerequisite: ditch
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Long narrow ditch in the ground -- prerequisite: war