证实

verify; prove; confirm; substantiate; validate; corroborate; authenticate; bear out; affirm; attest; attest to; vindicate; pin down; vouch for; cert.; verified; supporting; confirmed; validated; substantiated; corroborative; proof; confirmation; verification; demonstration; corroboration

推测

speculate; guess; infer; deduce; suppose; conjecture; surmise; hypothesize; presume; assume; theorize; postulate; inference; supposition; theory; calculation; hypothesis; speculation; presumption; speculative; conjectural; hypothetical; reckoning