saccaden.
英 sæ'kɑːd | 美 sæ'kɑd
中文n. 眼睛飞快扫视；急速勒马
词根词源
saccade (n.)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.
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