Sign in
|
English
|
Terms of Use
Dictionary
Forum
Contacts
Chinese
⇄
English
G
o
o
g
l
e
|
Forvo
|
+
我们知道大多数元素都有两种或两种以上的同位素
gen.
we know most elements
to
have two or more isotopes
Add
|
Report an error
|
Get short URL
|
Language Selection Tips