Scientists have known since 2002 that the chemical exists in certain products and have urged the food industry to reduce levels.
科学家们从2002年就发现一些食品含有这种化学物质，并已强烈要求食品工业减少这种化学物质的含量。
Improvements of working conditions helped to reduce levels of absenteeism.
工作条件的改善已令旷工率降低。
Improvements in working conditions helped to reduce levels of absenteeism.
工作条件的改善使旷工率降低。
That is, a call-in line can help reduce feelings of loneliness temporarily, but is not likely to reduce levels of chronic loneliness.
也就是说，电话专线能帮人暂时缓解孤独的感觉，却不太可能降低长期的孤独感。
Schools need to reduce levels of truancy.
学校需要减少旷课人数。
To reduce levels of environmental pollution.
降低环境污染的程度。
To reduce levels of environmental pollution.
降低环境污染的程度。
应用推荐