s. producing at a rate that barely covers production costs
a. 边缘的, 最低限度的, 有旁注的
[医] 缘的
1. The profit margin on this product is very marginal.
这个产品的利润率非常低。
2. He made a marginal improvement in his test scores.
他在考试分数上有了些许提高。
3. The changes in the policy had only a marginal impact on the community.
政策的变化对社区只有微小的影响。