“持久地”的英语？

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...

“持久地”的拼音为：...