The typical solution to a race condition is to ensure that your program has exclusive rights to something while it's manipulating it, such as a file, device, object, or variable.

竞争条件的典型解决方案是，确保程序在使用某个资源（比如文件、设备、对象或者变量） 时，拥有自己的专有权。

youdao

Instead of continuously using PWD and hostname, you can achieve the same effect by manipulating the prompt variable to reflect the current working directory and hostname.

不需要一直使用pwd和hostname，只需通过设置prompt变量让shell提示反映当前的工作目录和主机名，即可实现相同的效果。

youdao

Variable structure control was discussed for aircraft engine manipulating system simulator with motor loading.

研究了飞机发动机操纵系统地面模拟实验中用力矩电机进行电动加载控制问题。

youdao