贬义

retaining ring───[机]扣环；扣套；定位环

retaining rings───扣环

understand the meaning───明白意思

explain the meaning───解释一下意思

cognitive meaning───认知意义

deep meaning───深层意义

destaining───v.使脱色（destain的ing形式）

destroying angel───毁灭天使

different meaning───不同的意思

• destaining slides
• destaining meaning
• destaining solution