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
learning (n.)
[learning 词源字典]
Old English
leornung
"learning, study," from
leornian
(see
learn
).
Learning curve
attested by 1907.
[learning etymology, learning origin, 英语词源]
[learning 词源字典]