This is achieved by strict celibacy and ascetic practices.

这要通过严厉的独身生活和禁欲修行而达到。

youdao

Six years later he gave up ascetic practices then attained enlightenment under the Bodhi tree.

六年后放弃苦行，随后在菩提树下悟道。

youdao

So-called forest monks who observe strict ascetic practices known as dhutanga are said to meditate while walking for weeks without ever lying down, even to sleep.

所谓的林中僧侣奉行一种严格的苦修，叫做头陀苦行。据说他们在冥想中会一连行走几个星期，不用躺下来休息，甚至不睡觉。

youdao