Straw board: Originally, board made from straw fibres. Now used loosely to mean any type of boards for case-making.

草纸板：原本指用稻草纤维造的纸板。现在则笼统的指任何用来造书壳的纸板。

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Grey board or unlined chipboard are the normal boards used for case-making.

无里粗纸板是造书壳的常用材料。

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And Hollywood movies,like Avatar, are making a case for the environment.

VOA: standard.2010.01.23

But he hasn't wasted one moment making the case for early voting or making the case for why people should go to the polls.

WHITEHOUSE: The White House

Obviously, in a state like Ohio, I'll take, the President has been there making the case for the importance of early voting, making the case for why people should go to the polls on multiple occasions over the past couple of weeks and speaking directly to them in their backyards.

WHITEHOUSE: The White House

And I'm very grateful for his help, for his - making the case for me.

NPR: Despite Polls, Hillary Clinton Is Optimistic About S.C.