You may not enter the security area without authorization.

未经批准不得进入警戒地区。

《牛津词典》

to use the issue fund without authorization.

擅自动用发行基金的。

youdao

His action without authorization has stymied the whole plan.

他擅自采取的行动已经妨碍了整个计划的实施。

youdao

In accordance with their plea agreement, the suspects cannot return to the United States without special authorization.

VOA: standard.2010.07.09

Mr. Valle has pleaded not guilty to a charge of accessing that computer database without authorization.

WSJ: Cannibal-Plot Trial of Cop Tests 'Fantasy Defense'

Galant apparently took control of state land around his homestead on Moshav Amikam without authorization.

CENTERFORSECURITYPOLICY: Yoav Galant's depressing defeat

Google blamed financial printer RR Donnelley for filing a draft 8K earnings statement without authorization.

FORBES: Google's Third Quarter Earnings Released Early: Big Miss On Profit