I promise I am in this for the long haul.

我保证我会坚持到底。

《牛津词典》

Remind yourself that this is important to you and that you're in it for the long haul.

提醒自己，这对自己很重要，你将一直做下去。

youdao

You in this for the long haul, detective?

警探你做警察时间很长了？

youdao

You in this for the long haul, detective?

警探你做警察时间很长了？

youdao