The main obligation of insurant is on time pay insurance premium.被保险人的基本义务是按时缴纳保险费.Co-operation was more than just an attractive option, it was an obligation.合作不仅仅是诱人的选择，它也是一种责任。a driven sense of obligation紧迫的责任感You are ...
呼吸充满了石棉的空气可能对健康有害.Breathing asbestos - laden air may be hazardous to health.接触石棉的工人需穿防护衣.Workers who handle asbestos need to wear protective clothing.海泡石是一种新型的可代替石棉的 非 石棉、非金属矿物纤维.Sepiolite is a kind of Non - asbestos non...