A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
opponens
[opponens 词源字典]
"Another term for opponent muscle", Late 18th century: from Latin, literally 'setting against'.
[opponens etymology, opponens origin, 英语词源]
[opponens 词源字典]