It follows that unmanned programs are essential for the advancement of science in space.

为此，很有必要开展无人项目，以促进太空科学研究。

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They want far more severe cuts to Pell Grants and home heating assistance, plus reductions to such essential services as food inspections and the elimination of programs like Americorps.

共和党人会在佩尔助学金和家庭取暖补贴上进行更严苛的削减，再加上削减一些生活必须的服务比如食品安检、削减美国志愿队。

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Became an essential part of the computer science and engineering curricula in universities throughout the world and in various professional training programs.

成为全世界大学和各种各样的专业培训项目中计算机科学和工程课程中必不可少的一部分。

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Just as important, a larger economy would provide additional resources and flexibility essential to the reform of entitlement programs, including Social Security and Medicare.

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Further, much of what Medicare Advantage programs offer are non-essential services and benefits designed more to lure customers than provide valuable medical benefits (with some exceptions such as programs that include eye care and, occasionally, dental.) Medicare was never designed for these programs.

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United Nations assistance programs in Gaza have run out of flour and several essential pharmaceuticals, the U.N.

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