I promise I am in this for the long haul.

我保证我会坚持到底。

《牛津词典》

Those are visions for the long haul.

这些都是长期的愿景。

youdao

Prepare for the long haul of a changed lifestyle.

做好生活方式改变的长期准备。

youdao

After a briefing by U.S.Coast Guard Admiral Thad Allen, who is in charge of the overall government response, the president said he wants people along the Gulf of Mexico to know that the government,as he put it, is in this for the long haul.

VOA: standard.2010.06.14

"Seniors deserve to know that Medicare is there for the long haul, " he said.

WSJ: Medicare Trustees Dial Back Funding Concerns

So it is all pouring kerosene on your strengths and differentiating yourself for the long haul.

FORBES: The Three Phases of Careers - Where Are You and Where Should You Be?

Apple is in this for the long haul and has plenty of resources to compete.

FORBES: Apple Earnings Analysis Live! More Cash for Shareholders but Where to From Here?