If you need threads on a bare metal ARM target, the you at least need some sort of thread scheduling libraries of which there are many.

如果您需要在裸机的ARM目标线程，你至少需要某种形式的线程调度库，其中还有的许多。

youdao

I created a small module in assembler for ARM, to be linked together with my bare-metal embedded application.

我在汇编程序arm创建了一个小模块，可与我的裸机嵌入式应用联系在一起。

youdao

But abruptly, fiendishly, the tender pattern of nudity I had adored would be transformed into the disgusting lamp-lit bare arm of a man in his underclothes reading his paper by the open window in the hot, damp, hopeless summer night.

然而突然，糟糕得很，我崇拜的那副美好的裸体,投入了台灯下一双男人赤膊的肩膀，他穿着内衣裤,读着报纸，靠在敞开的窗边，沉浸在,炎热，潮湿，绝望的夏夜里。

耶鲁公开课 - 1945年后的美国小说课程节选

Yet most people never notice when the tiny bees alight on a bare arm or leg.

WSJ: New Sweat Bee Generates Buzz