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saccade (n.)
[saccade 词源字典]
1705, from French
saccade
"a jerk," from obsolete
saquer
"to shake, pull," dialectal variant of Old French
sachier
, ultimately from Latin
saccus
"sack" (see
sack
(n.1)). Related:
Saccadic
.
[saccade etymology, saccade origin, 英语词源]