Even in the absence of system failures, there is another risk worth discussing in the above code — concurrency.

甚至在系统没有发生故障时，上面讨论的代码还有另一种风险——并发性。

youdao

Food and aid poured in from most developed countries into the continent, but thanks to the absence of efficient distribution system, the hungry remained empty-stomach.

粮食和援助从大多数发达国家涌入这片大陆，但由于缺乏高效的分配系统，饥饿的人们仍然饥肠辘辘。

youdao

The absence of an oxygen atmosphere on Mars and other planets in our solar system means that these planets also lack an ozone shield that would protect surface-dwelling life from UV radiation.

在火星和我们太阳系的其他行星上没有氧气，这意味着这些行星也缺乏保护地表生物免受紫外线辐射的臭氧层。

youdao

But I think as time went on after the Rose Revolution, I think he wanted to perpetuate this kind of system in which there was really absence of checks and balances, no real opposition included in the political process very much sort of governing by committee of the inner circle, of loyal allies around the president.

VOA: standard.2009.09.01

In the absence of a monitoring system, they then can make their way undetected through the network of wholesalers and distributors that furnish medicines to doctors and conventional pharmacies.

WSJ: Fakes Infiltrate Injectable Drugs

Women form rotating credit systems to compensate for the absence of an accessible banking system.

BBC: Failed state: Can DR Congo recover?

Indeed, given the limited role of a grand jury in our system and the total absence of procedural protections in the process, the Independent Counsel's insistence that his investigation has been a search for "truth" is deeply misleading.

CNN: In defense of Clinton