• material ⪢⪢
A _____ is what is used to make something.
http://qindex.info/i.php?x=14309

• material ⪢⪢
http://qindex.info/i.php?x=14310

• material ⪢⪢
http://qindex.info/i.php?x=28411

◎◎◎ board ⪢⪢
A _____ is a flat, stiff piece of wood or other material.
http://qindex.info/i.php?x=22629

◎◎◎ bone ⪢⪢
A _____ is the hard material inside your body.
http://qindex.info/i.php?x=22288

◎◎◎ coronavirus ⪢⪢
Coronaviruses are a large group of viruses. They consist of a core of genetic material surrounded by an envelope with protein spikes. This gives it the appearance of a crown. 'Crown' in Latin is called 'corona' and that's how these viruses get their name.
http://qindex.info/i.php?x=7205

○○○ manufacture ⪢⪢
My father's factory manufactures steel building materials.
http://qindex.info/i.php?x=20970

○○○ nebula ⪢⪢
The solar system came into being about 4.5 billion years ago when a cloud of interstellar gas and dust collapsed resulting in a solar nebula, a swirling disk of material that collided to form the solar system.
http://qindex.info/i.php?x=11710

○○○ fabric ⪢⪢
The most ancient organic material found in the fabric of the stone work was radiocarbon dated to before 9,000 BC. #bookmark
http://qindex.info/i.php?x=28330

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