That is why we take the living material around us as subject matter for education.

所以我们要把自己周围活生生的事物作为教材。

youdao

Chinese sages instruct us not to be too concerned about trivial things in the world, for no matter how we strive in the material world, life will return to its starting point.

中国古人教导我们对微观世界不必过分关注，因为，无论我们在物质世界里有怎样的折腾，生命终究会回到起点。

youdao

This could give substance to the alliance's repeated declaration that the independence and security of these countries is a matter of direct and material concern to us.

ECONOMIST: No to NATO expansion