1·In case of fire, vinyl building products begin to smolder long before they burn, releasing toxic fumes of hydrochloric acid, and thereby threatening building occupants and firefighters.
为了防火,乙烯基建筑产品在燃烧之前很久就开始闷烧,释放有毒盐酸气体,从而威胁住户和消防员。
1·Criticism is also dangerous as it fosters resentment that can smolder for years and come back to haunt us at the worst possible moment.