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
unmanned (adj.)
[unmanned 词源字典]
"not furnished with a crew," 1540s, from
un-
(1) "not" + past participle of
man
(v).
[unmanned etymology, unmanned origin, 英语词源]