stringent
adj.
c.1600, "astringent," especially with reference to taste, from Latin stringentem (nominative stringens), present participle of stringere (2) "to compress, contract, bind or draw tight" (see strain, v.). Of regulations, procedures, etc., 1846.
〔李〕[string;-enta.] a.严格的； 紧的； 令人信服的 ←string,strict (L stringere,strictum)=to draw tight 拉紧