Is it something material a ball, an apple, a plaything which must be taken from one to be given to another?

是一些实在的东西吗？是球、苹果、玩偶……可以信手拈来、随意给人的实物吗？

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Each course is further divided in modules, each module coming with study material (a PDF document), and offers the option for self-assessment.

每门课程都进一步分为多个单元，每个单元都有学习资料（PDF文档），并且提供了自我评价的方法。

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A comet is a huge ball of frozen gas and dust that often releases a long trail of material as it nears the sun.

VOA: special.2009.09.30

They really don't.So, if everybody masters the material A I can say A's on the house.

他们真的不知道，如果每个人都掌握了知识,那么我敢说，人人可得。

麻省理工公开课 - 固态化学导论课程节选

Likewise for mass, we will take a chunk of some material and we will call it a kilogram.

质量也是这样,我们找来一大块材料,然后称它为 1 千克

耶鲁公开课 - 基础物理课程节选

In form, the movie is perhaps no more than a conventional triangle drama, but the milieu lends the material a special charm and interest.

NEWYORKER: A Walk on the Moon

In so doing it gives this material a new life.

FORBES: Finer-Grained Data Transform Our Understanding Of The Holocaust

They were forced to conclude that a half-dozen of them had dropped in volume and were leaking anywhere from a few gallons to a few hundred gallons of radioactive material a year.

FORBES: Nuclear Waste Leaks Worse than Thought in Washington