Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
German
⇄
Chinese
Danish
Dutch
English
Finnish
French
Greek
Italian
Japanese
Polish
Portuguese
Serbian
Spanish
G
o
o
g
l
e
|
Forvo
|
+
anerkannte Regel der Technik
patents.
公认的技术规则
Add
|
Report an error
|
Get short URL
|
Language Selection Tips
