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
biosonar
[biosonar 词源字典]
"A natural sonar system used by certain animals such as dolphins, whales, bats, etc", 1960s.
[biosonar etymology, biosonar origin, 英语词源]
[biosonar 词源字典]