The dismal song expressed his despair, which by the rule of practice was not allowed.

子桑凄凉的歌声透露出绝望的心情。这对一位修行者而言是完全违背原则的。

youdao

Man of practice acquires the similar rule of practice from different ancient sages, which they have been evidenced again and again.

当修行者经过这样反复印证，并且由不同的先哲口中获知了大致相同的修行原则之后；

youdao

However, it was not until the rule of Emperor Wu of Han Dynasty (156 87 that his ideas were finally put into practice.

然而，直到汉武帝统治时期（公元前156-87年），他的思想才最终被付诸实践。

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Enforcing the rule of law is not the usual practice of anyone in Haiti who wants to have a political career.

WSJ: Haiti Starts Over Again

The cardinal rule is to practice a bit of common sense.

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According to Mr Mogra, these include - respect for other people and the rule of law, freedom of expression and religious practice, participation in the democratic system and valuing education.

BBC: NEWS | UK | What does it mean to be British?