Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Chinese
French
German
Russian
Spanish
Ukrainian
+
G
o
o
g
l
e
|
Forvo
|
+
to phrases
principle of operation
This HTML5 player is not supported by your browser
comp.
principe d’opération
principle of operation
:
6 phrases
in 1 subject
Earth sciences
6
Add
|
Report an error
|
Get short URL
