All employees at the submarine base require security clearance.

所有潜水艇基地的雇员必须得到安全部门的审查许可方可录用。

《牛津词典》

He has a security clearance that allows him access to classified information.

他有安全许可，这准许他接触机密。

《柯林斯英汉双解大词典》

Everyone good security clearance, everywhere security risks.

人人把好安全关，处处设防隐患少。

youdao

The delays involve a security clearance process called Visas Mantis.

VOA: special.2009.06.11

Mr Lee, 60, said he destroyed the tapes after losing his security clearance at Los Alamos.

BBC: Nuclear scientist refused bail

Bishop's security clearance required him to report contact with her because she's a foreign national.

NPR: Judge Denies Bail In Defense Secrets Case

It says it had to because investigators were denied the security clearance they needed.

NPR: NSA Operations Remain Opaque to Investigators