Bad news, it involves me digging up the radioisotope thermoelectric generator.

坏消息就是我得把放射性同位素热电机挖出来。

One fossil is a reasonably complete, though fragmented, skull. Radioisotope dating shows it is 170,000 years old.

有一块化石是相当完整的头骨，虽然有裂痕。放射性同位素年份测定显示它有17万年的历史。

The other option is radioisotope decay, which uses a substance such as polonium-218 to heat and evaporate a liquid.

另一个选择是放射性同位素衰变，即利用一种物质，如polonium-218，加热并蒸发液体。

People use radium, radiograph and radioisotope in medicine, industry, etc.

人们在医药、工业领域运用镭、X光照片和放射性同位元素。