nature reserves
(piping, valves) Initialism of water-oil-gas, typically marked on valves that are acceptable for use with these fluids.
Obsolete spelling of find
A surname from Russian.
plural of nature reserve
ボランティアは、いくつかの自然保護区にある脆弱な生態系への関心を高めるために、清掃活動や教育的な見学会を組織しました。
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