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
ahem
[ahem 词源字典]
attention-getting interjection, 1763, lengthened from
hem
, imitative of clearing the throat.
[ahem etymology, ahem origin, 英语词源]