Apparent, appearing or seeming to be true, professed or declared as true without being demonstrated or proved. More difficult synonyms of ostensible include plausible (PLAW-zi-bul) and specious (SPEE-shus). Specious, however, has the negative suggestion of using deception to make something false appear true. A specious argument is one that looks good on the surface but is flawed underneath. Ostensible is often used in opposition to real or actual. An ostensible motive is not necessarily a real motive; an ostensible advantage is not necessarily an actual advantage.
王二狗Mark
Apparent, appearing or seeming to be true, professed or declared as true without being demonstrated or proved. More difficult synonyms of ostensible include plausible (PLAW-zi-bul) and specious (SPEE-shus). Specious, however, has the negative suggestion of using deception to make something false appear true. A specious argument is one that looks good on the surface but is flawed underneath. Ostensible is often used in opposition to real or actual. An ostensible motive is not necessarily a real motive; an ostensible advantage is not necessarily an actual advantage.
王二狗Mark
Ostensible means apparent, stated as true but not necessarily proved.
lynn_go
ostensible表面的；宣称的（看似或据说是真的但未验证） apparent显而易见的；表面上的；貌似的 plausible看似合理的；巧言令色的 specious似是而非的（贬义）
qz9999
很好，若加上点例句就更好了。