Thus some very dangerous drugs are approved because they are necessary to treat serious illnesses.

因此一些非常危险的药物被批准，因为它们是治疗严重疾病所必需的。

youdao

But they are necessary, right?

不过这是必须的不是吗？

youdao

They are necessary and are meant to help you grow as a person.

在你的成长之路上，这些是必须的。

youdao

But they also made it clear that they are willing to act alone, if necessary, to pass a health care bill.

VOA: special.2010.02.27

Why? Because good will and idealism, while necessary,they are not sufficient.

为什么呢？因为美好的意愿和理想主义，虽然必要，但却是不够的。

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Because they've made many copies of their genome and they've made all the proteins that are necessary to - for assembly of a new virus, then this cell can make many new viruses.

因为病毒制造了大量病毒基因组的拷贝,和所有,新病毒组装所需的蛋白质,所以这个细胞就有能力制造大量新的病毒

耶鲁公开课 - 生物医学工程探索课程节选

Unison members may be lowly homunculi compared to the doctors, but they are necessary homunculi.

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And a smaller proportion of Americans say that they are necessary to reduce the deficit.

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They are necessary to help those who are unable to protect themselves.

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