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
ball pen
[ball pen 词源字典]
"= ball-point pen", 1940s; earliest use found in
Esquire Magazine
.
[ball pen etymology, ball pen origin, 英语词源]
[ball pen 词源字典]