Securing nuclear materials must be a serious and sustained global effort.
确保核材料的安全必须是一个认真和持续的全球性努力。
One of the radioactive materials released by reactors is radiative isotopes of iodine, which poses a serious health risk particularly to children.
反应堆释放的一种放射性物质就是碘的同位素,其会人们尤其是儿童造成严重的健康损害。
I'd never made any instrument before, never really even worked with wood, metal, or other serious building materials. But, enthusiasm can overcome a lot of challenges!
在那之前我从来没有做过乐器,甚至从来没有真正用木头、金属或者其他正儿八经的建筑材料做过东西。但是,热情能够战胜很多困难!
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