資料來源 : pyDict

十分簡單明瞭的;十分安全的,極堅固的,有防備的

資料來源 : WordNet®

foolproof
     adj : not liable to failure; "a foolproof identification system";
           "the unfailing sign of an amateur"; "an unfailing test"
           [syn: {unfailing}]
     v : proof against human misuse, error, etc.; "Foolproof this
         appliance" [syn: {goofproof}, {goof-proof}]