Some parents now are choosing to save the cord blood, have it frozen, locked away somewhere just in case it is useful to their child later in life.

现在有些父母选择保存脐带血，把它冷冻起来，锁在某个地方，以防日后对孩子有用。

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If you think it is useful to mark books, you will have to buy them.

如果你认为在书上做记号是有用的，你就得去买它们。

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Some have compared the Hollywood studio system to a factory, and it is useful to remember that studios were out to make money first and art second.

有些人将好莱坞的电影制片厂制度比作工厂，而且有一点要记住的是，制片厂的首要任务是赚钱，其次才是艺术。

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It is also useful because the mold can be used over and over again to make exact copies of the ceramic form.

VOA: special.2009.09.09

It would be so easy if you built a cohesive system that carries the entire transaction to create a receipt that is useful.

如果你建立一个,能覆盖整个交易过程,能产生有效的收据的系统,一切都会变得更容易。

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English is a very good language to learn and it's very useful,

英语是一门值得学习的语言，它非常地实用，

要继续努力 - SpeakingMax英语口语达人

It is useful to continue to deepen and broaden your individual skills and abilities.

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Probably it is useful to be English to appreciate that much in Mr Powell's writing is satire.

ECONOMIST: Anthony Powell

And it is useful to keep in mind that the non-profit sector includes a wide range of organizations.

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