怎样确保一个费时的操作安全？

How can long-running operations be made safer?

youdao

“工作者线程池”，通过在后台执行费时的操作使应用程序响应更加迅速。

A worker thread pool, to make web applications more responsive by performing expensive operations in the background.

youdao

现在的ARM处理器需要消耗20 + 4.3 N个时钟周期，这是一个非常费时的操作，要尽可能的避免。

The current version takes about 20 + 4.3n cycles for an ARM processor. As an expensive operation, it is desirable to avoid it where possible.

youdao