Discipline is the key to unlocking the intricate physical puzzle that is the rock: you must control your fear, and understand and work with your body.

自律是解决攀岩时遇到的复杂的体能困境的关键：你必须控制内心的恐惧，了解你的身体并运用自如。

youdao

A great body is important to me. I take care of my body and know the dedication and discipline it takes, so I can already tell the same thing about a girl if she has a nice body.

身材好对我来说很重要，我自己的身材保持得很好，我知道要保持他们需要多大的付出和自律，所以如果一个女孩身材特别好，我就会知道她在生活上一定是和我一样的人。

youdao

You have to discipline your emotions, body, and mind to do this.

你必须控制自己的情绪、身体和心理来达成这一目标。

youdao

This means that the EU governing body will enforce fiscal discipline on its member nations.

FORBES: What's The Truth Behind The European Crisis?

If imprudent economies seek cash from the rescue fund, they will have to import discipline from a body that specialises in imposing it.

ECONOMIST: The euro and the future of Europe

Some people have shifted their body clocks but not everyone has the discipline or interest in such regimens to ease jet lag.

WSJ: To Avoid Jet Lag This Summer, Travel Like a Scientist