Radioactive isotope
[机] 放射性同位素
🧩 词语组成解析
🗣️ 情景例句
Radio says sunny and mild.
广播说是晴天 温暖适中。
Her parents died when she was a baby and she was raised by her grandparents.
她很小的时候，父母就死了，是祖父母把她带大的。
Has our material been all right?
我们的原材料没问题吧？