Boundary material
[化] 界面物质
🧩 词语组成解析
material
[mə'tɪrɪəl]
n. 材料，原料;素材;布，织物;适当人选;
adj. 物质的;肉体的;重要的，决定性的;辩证的，推论的;
🗣️ 情景例句
Hobbies are supposed to be relaxing.
业余爱好应该是令人放松的。
The whole class is in a heated discussion.
全班同学正在热烈讨论。
Even though the road was littered with boulders and pitted with holes, Bruce was not in the least perturbed.
尽管路面布满石头，坑坑洼洼，但布鲁斯却一点儿不慌乱。