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
unpaved (adj.)
[unpaved 词源字典]
1530s, from
un-
(1) "not" + past participle of
pave
(v.).
[unpaved etymology, unpaved origin, 英语词源]