1·Others decay more slowly, like some cesium, iodine, strontium, and argon.
剩下的一些延迟消退的很慢，比如铯、碘、锶和氩。
2·The city's challenge, chiefly, is to dispose of cesium-137, a radioactive isotope with a half-life of 30 years.
这座城市面临的最大问题就是处理铯—137，这是一种半衰期为30年的放射性同位素。
3·Once dispersed in the environment, it says, cesium-137 “is impossible to avoid.
该结构说，一旦在环境中扩散，铯-137“就是无法避免的。”
4·The radiation emitted by nonvolatile materials still poses a big danger to workers or cleanup crews close to the plant, along with the released volatile elements such as cesium and iodine.
不易挥发物质释放的辐射，和逸出的铯、碘等易挥发元素一样，对接近核电站的工作人员或善后人员来说仍然是一个巨大的危险。
5·Plutonium, cesium and strontium are also limited resources, and if fissionreactor technology advances enough, they could become fuel sources themselves.
钚、铯以及锶本身就是有限资源，如果裂变反应堆技术先进到一定程度，它们又会成为燃料。