fluoridation       
noun [ U ] uk/ˌflɔː.rɪˈdeɪ.ʃən/ us/ˌflɔːr.əˈdeɪ.ʃən/
 在(水或牙膏)中添加氟化物
the action of adding fluoride (= a chemical that makes teeth stronger) to water or toothpaste
  Fluoridation has been found to benefit dental health. 已经发现加氟有利于牙齿健康。 
 Mass fluoridation has been blocked in several European countries. 几个欧洲国家已经禁止大规模加氟。 
 See: fluoridate
 - More examples
 - Some people have concerns about the safety of fluoridation.
 - They consider water fluoridation as a big key towards improving children's dental health.
 - a campaign for water fluoridation