Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Afrikaans
⇄
Arabic
Basque
Chinese
Danish
Dutch
English
Estonian
Finnish
French
German
Hungarian
Icelandic
Italian
Norwegian Bokmål
Persian
Polish
Portuguese
Russian
Slovene
Spanish
Swedish
Turkish
+
G
o
o
g
l
e
|
Forvo
|
+
beter selfdeordeberamer
This HTML5 player is not supported by your browser
math.
较优同阶有偏估计量
Add
|
Report an error
|
Get short URL
