確信用英語怎麼說調查用英語怎麼說，確信的的英文單詞怎麼寫

確信用英語怎麼說調查用英語怎麼說

確信

(1) firmly believe

(2) be confident of

(3) be sure of

(4) be deeply convinced

(5) be assured of

(6) be trustful of

(7) lay absolute trust on sth

調查

(1) investigate

(2) find out

(3) probe ito

(4) examine

(5) look into

(6) inquire into

(7) make a survey for sth

(8) To survey sth