反反

1.
trans-trans
Apple Flavor & Fragrance Group Co., Ltd ... 1-辛烯-3-醇 1-Octen-3-ol 2,4-庚二烯醛,反-反- 2,4-Heptadien-1-al,trans-trans- ...
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2.
counter counter
读音规则 - 豆丁网 ... RR 音节。 音节。 counter counter-- 反反 counter counter--attack attack 反攻 反攻 ...
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3.
Anaphylactic Reactions Anaphylactic Reactions
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4.
Cause of Allergic Reactions Cause of Allergic Reactions
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5.
Symptoms of Allergic Reactions Symptoms of Allergic Reactions
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Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard