Certainly, some of the facts at hand are valid; for example, the Maya did have a Long Count calendar, pole-shift theory does exist, and solar activity does wax and wane.

当然，有些事实证据是有效的，比如玛雅人的确有一个长记历的历法，地磁反转理论也的确存在，太阳活动的确在减弱等等。

youdao

The moon wax till it become full, and then wane.

月亮渐渐变圆直至满盈，然后再变亏缺。

youdao

By measuring changes in the light reflected from the clouds, they found that the clouds appear to wax and wane in prevalence over a 27-day cycle.

通过测量夜光云反射的光的变化，他们发现夜光云从盛到衰的周期大约为27天。

youdao

He would watch the daylight wax and wane on the ceiling, or roaches creep slowly up the wall.

NEWYORKER: Hellhole

Like the Moon, asteroids can wax and wane, depending on their position relative to the Sun.

BBC: Asteroid thought to kill dinosaurs may not be guilty

Meanwhile the natural body clock was disturbed - some genes naturally wax and wane in activity through the day, but this effect was dulled by sleep deprivation.

BBC: Bad sleep 'dramatically' alters body