1、I know for a certainty that the company has been bought up.
我確實(shí)知道公司已經(jīng)被人收購(gòu)了。

2、I know for a certainty that he will be here in time.
我肯定他會(huì)準(zhǔn)時(shí)到這里來(lái)的。

3、I know for a certainty that the company has been bought up
我確實(shí)知道公司已經(jīng)被人收購(gòu)了。

4、I know for a certainty that he will be here in time
我肯定他會(huì)準(zhǔn)時(shí)到這里來(lái)的。

for a certainty翻譯