Radioactive material
放射性物质
🧩 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
His excuse sounds unconvincing.
他说的理由好像不可难。
May I help you?
要我帮忙吗？
Maori believe that the spirit stays with the body for three days, so during this time someone always stays with the dead person.
毛利人相信人死之后灵魂还会附体3天，因此在这段时间里一直有人守候着死者。