结论手术安全核查可以避免许多低级错误的出现，确保手术患者的安全。
Conclusion Operation safety checking can avoid many low-level errors to ensure the safety of patients.
而且与布什的头一次入主白宫不同的是，联邦调查局异乎寻常地很早就开始了对潜在的白宫雇员的安全核查。
The FBI has also started unusually early with their security checks on potential White House employees — in contrast to Bush's first time in office.
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