irritants
n.
刺激物，刺激因素( irritant的名词复数 );
例句:
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Many pesticides are irritants.
很多杀虫剂都具有刺激性。
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Mustard oils are irritants, capable of causing serious injury to animal tissue.
芥子油是一种刺激剂, 对动物组织能够引起严重的伤害.
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These gases can also act as sensory irritants to produce tears or sneezing.
这些气体也可以起一种刺激物的作用,引起流泪或打喷嚏.
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There are several other irritants in the India-China relationship.
来自VOA
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Environmental conditions and contact with chemical irritants can also cause itching.
来自BBC
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Conjunctivitis causes Conjunctivitis is caused by infection or irritants, including allergens.
来自BBC