使用一次药剂防治难于持久地控制害虫.Rarely can permanent control be achieved by a single application of spray.五是稳定持久地加强基础研究.Fifth, strengthening basic research in a steady and sustained way.每个企业努力持久地与顾客保持合作关系.Every business strives to hav...
Students at the Belfast campus have access to excellent sports facilities.在贝尔法斯特校园的学生可以使用极好的体育设施.Only 40 % of 5 - year - olds have access to preschool education.5 岁 孩童中只有40%能享受学前教育.They don't have access to a conver...