"Yay Exercise!" "If you want your child to have healthy habits, practice healthy habits too because you're your child's best role model."

VOA: special.2009.11.27

So they're optional, but they're very, very, very highly encouraged that you do these, because this is going to give you practice for the types of problems that are going to be on the exam.

虽然它们是选做的，但是它们非常非常，非常值得你们去做，因为这对你们来说是一次训练,是用来熟悉考试题型的。

麻省理工公开课 - 化学原理课程节选

And this is the same periodic table that you're going to get in your exams, so it's good to practice doing your problem-sets with that periodic table so you're not relying on having the double check right there of seeing what the electron configuration is.

这也是你们考试时会用到的相同的表,这样你们就不会，所以使用周期表来做问题集,是很好的练习,这样你们就,不会依赖于再次确认,电子构型是什么了。

麻省理工公开课 - 化学原理课程节选

The measure would end the common practice of re-registering banks under a new name.

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You're more likely to practice every day if you make it more fun by varying your regimen.

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No one makes them feel bad when they say a word incorrectly, and they're not told to practice that word dozens of times.

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