expendable material造句

例句与造句

1. Furthermore, the absence of substrates simplifies planting and harvesting ( providing opportunities for automation ), decreases the volume and weight of expendable materials, and eliminates a pathway for pathogen transmission.
2. Such curricula typically require much less teacher training, less expensive and smaller books, and do not require purchasing expensive expendable materials such as scissors, paste, paint, beads as is required by reform mathematics curricula such as Investigations in Number, Data, and Space.
3. It's difficult to find expendable material in a sentence. 用expendable material造句挺难的