Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
English
⇄
Chinese
Dutch
French
Japanese
Russian
+
G
o
o
g
l
e
|
Forvo
|
+
natural constraint
This HTML5 player is not supported by your browser
gen.
自然拘束
Engineering and Science Technical Dictionary (James Friend)
Add
|
Report an error
|
Get short URL
