說不準

unable to say / can't say precisely

to persuade

to speak / to say / to explain / to scold / to tell off / a theory (typically the last character in a compound, as in 日心說|日心说 heliocentric theory)

to speak; to talk; to say / to explain; to comment / to scold; to tell off / (bound form) theory; doctrine

no; not so / (bound form) not; un-

accurate / standard / definitely / certainly / about to become (bride, son-in-law etc) / quasi- / para-