oindexoligotrophy./ol-i-go-truh-fee/US // ˌɒl ɪˈgɒ trə fi //少子化,寡头症,寡头政治,少数民族主义Definitionsn.noun · 名词1. Ecology.›the state of being oligotrophic, or deficient in nutrients but high in oxygen.Level 5More words in o →