noun | adjective | to phrases
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| below grade | |||
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| hypogeous | |||
| subterraneous | |||
| subterranean (souterraine); basement; substructure; foundation (road, railway); under the soil, beneath the soil (souterraine); underground (souterraine) | |||
| underground | |||
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souterrain : 579 phrases in 50 subjects |