词根：-strain-, -strict-, -string-

【词根含义】：束缚

【词根来源】：来源于拉丁语动词stringo, stringere, strinxi, stricitus(束缚)。

【同源单词】：constrain, constraint, overstrain, restrain, restraint

前缀：over-

【词根含义】：过分,在…上

【同源单词】：overcast, overcome, overdraft, overdraw, overdue