They are hoping that once in office he can be persuaded to moderate his views.

他们希望他一上台后就能他说服，使他的观点变得温和些。

《柯林斯英汉双解大词典》

They may find it difficult to keep them once in office.

他们可能会察觉一旦竞选成功，自己很难遵守诺言。

youdao

Once in office, Jefferson extended slavery with the Louisiana Purchase in 1803; the new land was carved into 13 states, including three slave states.

入主白宫以后，杰弗逊在1803年通过购买路易斯·安娜扩大了奴隶制；这片新的土地后来被分为13个州，其中包括了三个蓄奴州。

youdao

It's just the sheer--it's amazing, it's an amazing read too. And then, Marc Bloch; I once had the pleasure when I was giving a talk at the University of Strasbourg and sitting in Marc Bloch's office.

那真的是--真的特别棒,也是本好书,还有马克·布洛克,我曾经有幸在斯特拉斯堡大学演讲时,坐在马克·布洛克的办公室里

耶鲁公开课 - 1871年后的法国课程节选

So it'll be a time once or twice a week where they will be in their office.

所以，他们大概每周有一两次会在办公室里。

与教授的面谈 - SpeakingMax英语口语达人

Once in office, of course, he isn't all that clear on how an economy works.

NPR: 'Duck Soup': Take One Fiscal Crisis, Boil Merrily

Once in office, President Obama launched a series of initiatives aimed at realizing this vision.

FORBES: Nuclear Paradox: Shrinking U.S. Arsenal Requires Huge New Expenditures

Labour supported the idea in opposition, but once in office Lord Irvine brushed it aside.

ECONOMIST: Abolish the Lord Chancellor