This is less "robust" in a sense than OS threads -- but it would not require much extra machinery to catch exceptions inside scheduler()'s loop rather than outside the loop.

这在某种意义上“健壮性”不如 OS 线程 ― 不过在 scheduler() 的循环 内捕获异常不会比在循环外需要更多的机器资源。

youdao

It is entirely possible to stop, refactor, be a little behind on features, slam in a few features, not catch up but screw up the code, and loop forever, never getting benefit.

停下来、重构、稍微落后于特性、专注于少量特性、不赶进度而是优化代码，如此循环往复，却从来不受益；这样的状况完全有可能。

youdao

I fly the jet out of the loop, and I look to catch the right altitude, airspeed, and AOA for the loaded roll.

我让飞机完成整个的大回环动作，并且检查这个时候的高度、空速还有攻角，准备做过载滚转。

youdao

Rather than take the belt loop to the office, she detoured on surface streets through her old neighborhood, just to catch a glimpse of the house.

NEWYORKER: Shauntrelle