retval is the return value of the system call.

retval 是系统调用的返回值。

youdao

Determines the integer value of the system property with the specified name.

确定指定名称的系统属性的整数值。

youdao

You don't want to lose the value of the system by having messages of a certain type being in mixed categories.

您不会希望因为将某种类型的消息放进混合的类别中而丢失系统的值。

youdao

"What happens with the health outcome, depends upon good communication, the trust and credibility between the health professional and the individual seeking care, and an understanding of the patient's culture, value system, so that one can develop,hopefully, a strong relationship or interaction between the health professional and the individual.

VOA: standard.2010.03.05

This should make sense to you, because they don't, in fact, want to gain another electron, because that would mean that electron would have to go into a new value of n, a new shell, and that's really going to increase the energy of the system.

这对大家来说应该容易理解，因为它们实际上不想得到另一个电子，因为这意味着这个电子不得不,到一个新的，n，值更大的壳层上去，这将会增加系统的能量。

麻省理工公开课 - 化学原理课程节选

With so much time, trouble and effort having been taken in persuading everyone of the value of the Decision Review System to the sceptics, one can only imagine what the reaction of the ICC will be to such a basic error.

BBC: Jonathan Agnew column

Richard George, an executive editor at gaming site IGN who covers Nintendo, said Thursday's presentation may have been the moment the company finally hammered home the value of the new system.

CNN: Nintendo's Wii U coming in November

The art plays a crucial role in the value system of the Companions of the Tour de France, for example.

UNESCO: Intangible Cultural Heritage