Unstable isotope
[电] 不稳定同位素
🧩 词语组成解析
🗣️ 情景例句
Certainly, sir. I'll get a taxi for you. Are you going directly to the cinema?
好的，先生。我会帮您叫车的，您直接去电影院吗？
Does this bus go to the beach?
这辆公共汽车去海滨吗？
I'm really positive that this product has all the features you have always wanted.
我确信这种产品有各种你所要的款式。