Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
French
⇄
Afrikaans
Arabic
Basque
Catalan
Chinese
Danish
Dutch
English
Estonian
Finnish
German
Greek
Hungarian
Icelandic
Italian
Korean
Lithuanian
Polish
Portuguese
Russian
Serbian
Spanish
Swedish
Turkish
Ukrainian
+
G
o
o
g
l
e
|
Forvo
|
+
variable observable
This HTML5 player is not supported by your browser
math.
可观测变量
Add
|
Report an error
|
Get short URL
