Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Chinese
+
G
o
o
g
l
e
|
Forvo
|
+
back trace technique
This HTML5 player is not supported by your browser
avia.
回溯技术
space
向后跟踪技术
;
回翔技术
tech.
向后追踪技术
Add
|
Report an error
|
Get short URL
