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
UFO (n.)
[UFO 词源字典]
1953, abbreviation of
Unidentified Flying Object
, which is attested from 1950.
[UFO etymology, UFO origin, 英语词源]