【文章內(nèi)容簡介】
nly on, awaits further study, remain to be answered, remain unresolved形容詞/副詞類:curiously, problematic, disappointed, inadequate, imprecise, unwarranted, premature, untenable, unhappily, unfortunately, unreliable, negligible, not the whole explanation, no reason to do, be careful about=be wary of , no