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四字母词根: rect=right：straight正，直
correct v.n
incorrect
correction
corrective
rectangle
四字母词根: rupt=break破
rupture
interrupt
interruption
disrupt
四字母词根: sect=cut切割
insect
section
sectional
dissect
四字母词根: sent，sens=feel感觉
sentiment
sentimental
consent v.n
