If your system doesn't provide the standard watch command and you don't have the time or inclination to build the procps package for your system, you can easily simulate it with a simple shell script.

如果您的系统没有提供标准的watch命令，您又不愿意花时间构建procps包，那么可以用一个简单的shell脚本模拟它。

youdao

Standard & Poor's has downgraded three of them and put another on credit watch.

标准普尔已经调低其中三国的评级，并将另一国列入债信观察名单。

youdao

Village officials were told to guarantee that households under their watch supplied the standard answers, and were warned they would lose a cash deposit and even their jobs if something went wrong.

村长被要求保证在他管理下的村民回答标准的答案，被警告如果这儿出了乱子他们会丧失存款或者工作。

youdao

This wrist computer comes in five colors and is only a bit bigger than a more standard watch.

WSJ: Watch Keeps Alerts From a Phone at Arm's Length

Digital cable offers customers far more channels to watch than standard cable--typically in the hundreds-- and gives them an interactive on-screen program schedule.

FORBES: Cable Companies Dish Data

The standard version of the watch uses a black dial with large white luminous numerals along with a red Alpina triangle on the second hand.

FORBES: Alpina Takes to the Air with New Pilot Watches