搜索
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
to and fro的词源解释,to and fro来源
to and fro
（adv.）
"forward and backward," mid-14c.; see
to
(prep.) +
fro
(prep).
该词起源时间：
14世纪中期
to and fro的相关词汇
fro
to
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
