1.keep up 保持

Donahoe recently claimed that retailers flock to ebay seeking a technology partner to keep up. "
多納霍最近聲稱，零售商紛紛涌向eBay，尋求技術(shù)合作以保持競爭力。

Many japanese strive to keep up egalitarian appearances.
很多日本人努力保持平等待人的形象。

2.confess to 承認(rèn)，坦白

I confess to not being particularly consistent at timekeeping.
我承認(rèn)自己并不是一貫特別守時。

The police hoped he would confess to a crime he didn't commit.
警方希望他能夠坦白他所犯下的罪行，但是他什么都沒做。

3.go back 回轉(zhuǎn)；回顧

And I will go back to not talking after tonight.
今晚采訪之后，我又得回去埋頭干活了。

I can't go back and end this now.
我現(xiàn)在不能回去并結(jié)束這一切了。