Excessive absorption or lack of halogen group elements could result in disease.

过量摄入或缺乏卤族元素，都可能导致疾病的发生。

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This type of reaction has signicant advantages, the alkyne proceeds the coupling reaction with the halogen atom as the leaving group.

卤原子作为炔烃三键活化基团和定位基，炔烃三键发生亲电加成反应；

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Any of a group of substances, most often synthetic organic halogen compounds, that irritate the mucous membranes of the eyes, causing a stinging sensation and tears.

一类物质，大部分是合成的有机卤化物，能刺激眼睛黏膜引起疼痛和流泪。

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