求翻译：通过测定还原能力、总抗氧化能力以及水提物对1，1-二苯基-2-三硝基苦肼自由基（DPPH•）、羟自由基（•OH）、超氧阴离子自由基（O2-•）的清除能力来评价水提物的抗氧化活性。是什么意思？

Determination of reducing capacity, total antioxidant capacity and the water extract of 1,1 - diphenyl -2 - trinitro bitter hydrazine radical (dpph •), hydroxyl radical (• OH), superoxide anion radical ( o2-) scavenging ability to evaluate the antioxidant activity of aqueous extract.

Restore capabilities by measuring total antioxidant capacity, as well as aqueous to 1, 1 - 2 - 2 - phenyl nitro 3 met bitter free radicals (DPPH • free radicals), Psilocin ( •) and ultra-OH anion oxygen free radicals (O 2- •) cleared the capacity to evaluate the aqueous anti-oxidant activity.

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By measuring the ability to restore water, total antioxidant capacity, as well as extracts of 1,1-phenyl-2-the second of three Nitro-free radical hydrazine (DPPH ·), the hydroxyl radical (· OH), superoxide anion radical (O2-·) scavenging ability evaluation of antioxidant activity of water extracts.

Through determination reducing ability, total oxidation resistance ability as well as Shui Tiwu to 1,1- diphenyl - 2- trinitro painstakingly jing free radical (DPPH•) Hydroxy free radical (•OH), ultra oxygen anion free radical (O2-•) Elimination ability appraises Shui Tiwu the oxidation resistance a