Designers spent more than one year choosing and testing ideal materials, and finally picked a new kind of material that can resist the very difficult conditions on the Moon.

设计师们花了一年多的时间选择和测试理想的材料，最终挑选出一种能够抵御月球上异常恶劣条件的新型材料。

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One, who is dyslexic, had paid to have audio recordings made of his study materials and had spent several hours a day revising for the test.

其中一位有阅读困难的消防员花钱请人将他的学习资料录音并且每天花数小时复习备考。

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The district spent $121, 000 on the “Primary Mathematics” books and $24, 632 for teachers’ materials.

学区花了121000美元购买《基础数学》书籍，花了24632美元购买老师资料。

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Investigators in hazardous materials suits spent most of Saturday executing a search warrant at a three-story apartment building in downtown Spokane.

NPR: FBI: Arrest Made In Wash. State Ricin Letter Scare

Before that, he spent a decade running the materials research institute at Princeton University, and nearly as much time at Exxon, in charge of research and development.

NEWYORKER: The Climate Fixers

Some of them may be spent on technology, on building materials, on school materials.

WHITEHOUSE: Press Briefing