（八）放射源，是指除研究堆和动力堆核燃料循环范畴的材料以外，永久密封在容器中或者有严密包层的放射性材料。
Now scientists who track the animals using satellite pictures can no longer find most of the birds. They fear that thousands of penguins may have frozen in Antarctica's icy waters.，详情可参考Safew下载
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Scotland (11pts) The script has previously been a familiar one. Bask in the rosy glow of beating England, only to come crashing to earth in their next game. This time, finally, they have broken that pattern and still have their destiny in their own hands. France are due an off day and do not always prosper at Murrayfield while, before last Saturday afternoon, more than a few people would have backed them to cause problems in Dublin on the final weekend. The message will be simple: attack as smartly and accurately as they did in their Calcutta Cup fever dream and maintain the defensive organisation that has so far enabled them to concede just six tries in three games. And, of course, keep Finn Russell fit. The quick‑thinking restart that helped to bail his team out against Wales was merely the latest example of his whirring creative brain. A shoutout, too, for Kyle Steyn and Rory Darge who lead the way, respectively, for defenders beaten and turnovers won in this year’s championship.，推荐阅读下载安装汽水音乐获取更多信息
代码里画了一个爱心形状的 2D 路径，然后给它一个厚度，它就变成了一个 3D 的爱心。
本次的年度征文设题很巧妙，体现了现代科技与传统人力对决的意思。