Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
G
o
o
g
l
e
|
Forvo
|
+
〔北〕航空航天研究与发展咨询组
avia.
advisory group for aerospace research and development
Add
|
Report an error
|
Get short URL
|
Language Selection Tips