YOU SAID:

Concrete is a material comprised of a number of coarse aggregates (particulate materials such as sand, gravel, crushed stone, and slag) bonded with cement.

INTO JAPANESE

コンクリートは、多数の粗骨材（砂、砂利、砕石、スラグなどの微粒子材料）をセメントで接合した材料である。

BACK INTO ENGLISH

Concrete is a material that is cemented with a number of coarse aggregates (particulate materials such as sand, gravel, crushed stone, slag, etc.).

INTO JAPANESE

コンクリートは、多数の粗骨材（砂、砂利、砕石、スラグ等の微粒子材料）でセメント化された材料である。

BACK INTO ENGLISH

Concrete is a material that is cemented with a number of coarse aggregates (particulate materials such as sand, gravel, crushed stone, slag, etc.).