quword
趣词
Word Origins Dictionary
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
mutually (adv.)
[mutually 词源字典]
1530s, from
mutual
+
-ly
(2).
Mutually exclusive
is recorded by 1650s.
[mutually etymology, mutually origin, 英语词源]