substitutes n.代用品；代替者；替補隊員vt.代替；用 ... 代替；代以substitute (v.) substitute n.代用品；代替者；替補隊員vt.代替；用 ... 代替；代以substation (n.) substantive (adj.) substantiation (n.) substantiate (v.) substantial (adj.) substandard (adj.) substance (n.) substance n.實質；物質；財産；內容；重要性subspecies (n.) subsonic (adj.) subsoil (n.) subsistent (adj.) subsistence (n.) subsist (v.) subsidy (n.) subsidize (v.) subsidise (v.)