Sign in | English | Terms of Use
DictionaryForumContacts

   English ⇄
Google | Forvo | +
audible warning system
avia. 音响告警系统
el. 音响报警系统
space 音响警报系统
audible aural warning system
avia. 声音告警系统

 The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Add | The server is undergoing maintenance and the site is working in read-only mode. Please check back later.">Report an error | Get short URL | Language Selection Tips