To accomplish this feat, the Memory Manager needs to swap page frames in and out of physical memory.

要实现这个壮举，内存管理器需要交换页面结构进出物理内存。

youdao

Both "feat" and "achievement" emphasize the difficulty of accomplishing something mental or physical.

feat和achievement均着重指在脑力或体力方面完成某事物的艰巨性。

youdao

This physical feat can involve suspicion-raising contortions of the arm.

WSJ: Cricket's 'Chucking' Challenge

Getting a satellite signal out of Perth, for instance, can involve lying prostrate on the ground in the public park next to the CBD with a receiver dish in one hand and a microphone in the other, a bodily feat that requires the kind of physical contortions that might test a Byron Bay yoga instructor.

BBC: Essential reading for new arrivals in Australia