Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Chinese
German
Russian
G
o
o
g
l
e
|
Forvo
|
+
reciprocity relation
tech.
可逆关系
;
互易关系
;
互反关系
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