The second part to component level error handling is to do appropriate logging.

组件层出错处理的第二个部分就是要做适当的日志。

youdao

The system level error includes syntactical error, null pointer exception, web service timeout, database connection timeout, and so on.

系统级错误包括语法错误、空指针异常、web服务超时、数据库连接超时等。

youdao

This is different from a system exception, which represents a system level error like running out of memory or running past the end of an array.

这同系统异常不同，系统异常表示系统级别的错误，如耗尽内存或者数组越界。

youdao

Simplifications allow a permissible level of error to enter into the model in the hopes of making the it simple enough to run quickly, the concept understandable, and the results readable.

FORBES: On Models & Why Arsenal Must Invest ?120M To Compete for the EPL Title

But against that possibility investors should balance the fact that they stand a better than 50% chance of having 20-30% more money even at the highest level of tracking error.

FORBES: A New Way Of Calculating The Brutal Arithmetic Of Fund Fees

"We know at this level the difference is error and until we cut them out in our game, that's going to be difficult to get results, " Rees said.

BBC: Captain Matthew Rees urges Wales to cut out mistakes