Các câu ví dụ cho từ hazardous

1. Concentrations of hazardous ground-level ozone have worsened in northern China despite country-wide efforts to tackle air pollution, according to a study published by Peking University on Tuesday.

2. In 2016, pit collapse at two titanium reservoirs in Binh Thuan had caused an environmental disaster with hazardous red mud spilling, halting traffic and damaging residential property.