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单词
knee-jerk
释义
WordReference Random House Unabridged Dictionary of American English © 2024
knee
′
jerk′,
Physiology
a reflex extension of the leg, caused by contraction of the quadriceps, resulting from a sharp tap on the patellar tendon;
patellar reflex.
1875–80
knee-jerk
(nē
′
jûrk′),
USA pronunciation
adj.
of or pertaining to a knee-jerk.
[
Informal.
]
reacting according to a certain habitual manner;
unthinking:
a knee-jerk liberal.
1895–1900
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更新时间:2026/8/9 23:42:03