亚硫酸根离子可把溴由棕色变成无色。
Sulphite SO 3 can turn bromine water from brown to colorless.
埃里克氏体病是一种由犬埃立克体引起的疾病，由棕色狗蜱传播。临床症状有发热、血管炎和血细胞数量降低。
Ehrlichiosis is a disease caused by Ehrlichia Canis and spread by the brown dog tick, Rhipicephalus sanguineous. Signs include fever, vasculitis, and low blood counts.
他们发现棕色的外壳由大量的沟状结构组成，它们能把太阳光转换成散射光线。
They found that the brown shell is made of an array of grooves that split sunlight into diverging beams.
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