As a beautiful flower that is full of hue but lacks fragrance, even so fruitless is the well-spoken word of one who does not practice it.

只说好话而没有实行是毫无结果的，这好比一朵美丽的花，徒具颜色而没有芳香。

youdao

The problem is that they do not practice it in a long-term memory way.

问题是他们没有进行长期记忆的训练。

youdao

That is because the victims are vulnerable to exploitation, laws against this practice are not vigorously enforced and it is a hugely profitable trade.

VOA: standard.2009.08.21

And it was a practice that was not broadly used until somebody really studied systematically.

这项技术一直没有广泛应用,直到有人系统地研究它

耶鲁公开课 - 生物医学工程探索课程节选

And in terms of doing this for your homework, I actually want to mention that in the back page of your notes I attached a periodic table that does not have electron configurations on them. It's better to practice doing electron configurations when you cannot actually see the electron configurations.

关于你们的作业，是在你们讲义的后面的页,我附上了一张,没有给出电子构型的周期表,最好联系一下做出电子构型,当你们实际上看不到,电子构型的时候。

麻省理工公开课 - 化学原理课程节选

It is familiar and widely accepted all over the world, even by groups who do not practice it.

CNN: Highlights from the world's press

Framing is a critical negotiation skill so why not practice it on the easy things (your own life) before trying it out on others.

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As for the United States, it respects the convention in practice but has not ratified it, because some senators fear a loss of American sovereignty.

ECONOMIST: The Arctic