raw material造句

All the units employ hollow burned - clay blocks as the basic raw material.
所有构件都用空心陶土砖做基本原料.

Bark may be used as raw material for paper - making.
树皮可以做造纸的原料.

Only 55 per cent of the raw material is canned. The rest is thrown away.
只有55％的原材料被罐装储存。其余的都被扔掉了。