We must do everything possible to lift the siege.

我们必须尽一切可能解除包围。

《柯林斯英汉双解大词典》

I extended not only my congratulations but my commitment to do everything possible to help him, not only unite our party but our country.

我不仅表示祝贺，而且承诺尽一切可能帮助他，不仅团结我们的党，而且团结我们的国家。

youdao

Of course, sons and daughters want to visit the facilities, talk to the administrators and residents and other families, and do everything possible to fulfill their duties.

当然，孩子们想要参观这些设施，与管理人员、居民和其他家庭交谈，尽一切可能履行他们的职责。

youdao

And they will do everything they can, everything possible to make him stay in jail and not go back to Panama."

VOA: standard.2010.07.07

"This was a human error which should never have occurred, and we are going to do everything possible to see that it is never repeated."

VOA: standard.2010.01.23

The bottom line is that if someone is working hard to get a college degree in the U.S., we should do everything possible to help him or her after they graduate.

FORBES: Why the U.S. Should Attach a Green Card to Immigrants' College Diplomas

Spurs midfielder Jemaine Jenas has urged the White Hart Lane outfit to do everything possible to hang on to Berbatov.

BBC: Berbatov tipped to stay at Spurs

While no business can be completely protected from unexpected events, every business can be proactive and do everything possible to minimize risk.

FORBES: Five Ways to Mitigate Risk in Social Business