It's stated in the passage quite a few times.

它在文章中已经被提了好几次了。

But it's certainly an argument that gets stated all the time in this area.

但这个观点在这一领域中经常被提及。

At a stated time two or three or four rival harvesters would suddenly appear on the farmer's soil, each prepared to show, by actual test, its superiority over the enemy.

在规定的时间， 两台或三台或四台敌对的收割机会突然出现在农民的土地上， 每台都准备通过实际测试来展示其对敌人的优势。

He was the kindest of nurses, and at stated times took off the bandages, and steeped them in the cooling liquid that was kept ready, and put them on again, with a patient tenderness that I was deeply grateful for.

他是最和善的护士， 会在规定的时间取下绷带， 将它们浸泡在准备好的冷却液中， 然后重新穿上， 耐心而温柔， 我对此深表感谢。