Product piracy is a major irritant in china-us relations , but usually involves complaints that chinese are copying american products .
产品盗版是中美关系的主要刺激物，但通常是关于中国盗版美国产品的诉讼。
Px may not be a deadly poison , but it is now a proven irritant for these influential white collar workers .
二苯甲也许不是致命的毒药，然而，它是现阶段白领工人证明自己影响力的刺激物。
At lower concentrations gypsum acts as an irritant ; it reddens the eyes , inflames the throat , and causes nausea , shortness of breath , and fluid in the lungs .
低浓度的硫化氢是一种刺激物，会让眼睛变红，喉咙发痒，反胃恶心，呼吸急促，肺部不畅。
A known irritant , ppd allergies have the potential to affect 1.5 % of the population .
