Despite their bitter screen rivalry, off-stage they are close friends.虽然他们在银幕上是誓不两立的对手，在现实生活中却是至交。a fierce rivalry for world supremacy夺取世界霸权的激烈竞争The quarrel originated in rivalry between the two families.这次争吵是两家不和引起的....
Ecologists argue that the benefits of treating sewage with disinfectants are doubtful.生态学家认为用消毒剂处理污水是否有益值得怀疑。Other substances used to prevent disease or infection include disinfectants and germicides.用来预防疾病或感染的其它物质有消毒剂和灭...
In anaerobic environments, chlorinated aromatic compounds were usually degraded by reductive dechlorination.氯代芳香族化合物可在厌氧条件下通过还原脱氯作用得以降解.Alkali neutralizer powder, but also can be used as dechlorination agents and Rust Re...