抑制的人抑制剂（尤指摄影中用的溴化钾等）
danci.911cha.com
noun
1. restrainer的意思
1. a person who directs and restrains
Synonym: controller
2. restrainer是什么意思
2. a chemical that is added to a photographic developer in order to retard development and reduce the amount of fog on a film