החיפוש שביצעת - ((information requirements) OR (information environments)) base excision from steven - חזר ריק.

אולי כדאי לנסות איות אחר או כתיב מלא:
information requirements » nutrition requirements, irrigation requirements
information environments » information environment, simulation environments
base excision » based decision
excision from » exclusion from, excitation from, decisions from
from steven » from seven, strom steven, from steel

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